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123-576: T&R Theakston is a British brewery in Masham , North Yorkshire and the sixteenth largest brewer in the United Kingdom by market share. It is the second largest under family ownership, after Shepherd Neame , and is known for its Old Peculier beer. The brewery is one of the few remaining in the UK to have an in-house cooperage. The business was founded in 1827 by Robert Theakston and John Wood at

246-399: A fermentable starch source such as malted barley . Most beer is fermented with a brewer's yeast and flavoured with hops . Less widely used starch sources include millet , sorghum and cassava . Secondary sources ( adjuncts ), such as maize (corn), rice, or sugar, may also be used, sometimes to reduce cost, or to add a feature, such as adding wheat to aid in retaining the foamy head of

369-594: A "mash tun" – an insulated brewing vessel with a false bottom . The end product of mashing is called a "mash". Mashing usually takes 1 to 2 hours, and during this time the various temperature rests activate different enzymes depending upon the type of malt being used, its modification level, and the intention of the brewer. The activity of these enzymes convert the starches of the grains to dextrins and then to fermentable sugars such as maltose . A mash rest from 49–55 °C (120–131 °F) activates various proteases , which break down proteins that might otherwise cause

492-413: A beer tax in 1004 AD. Early breweries were almost always built on multiple stories, with equipment on higher floors used earlier in the production process, so that gravity could assist with the transfer of product from one stage to the next. This layout often is preserved in breweries today, but mechanical pumps allow more flexibility in brewery design. Early breweries typically used large copper vats in

615-440: A conical bottom and a cylindrical top. The cone's aperture is typically around 70°, an angle that will allow the yeast to flow smoothly out through the cone's apex at the end of fermentation, but is not so steep as to take up too much vertical space. CCVs can handle both fermenting and conditioning in the same tank. At the end of fermentation, the yeast and other solids have fallen to the cone's apex can be simply flushed out through

738-674: A cool temperature, the preservative nature will decrease. Brewing is the sole major commercial use of hops. Yeast is the microorganism that is responsible for fermentation in beer. Yeast metabolises the sugars extracted from grains, which produces alcohol and carbon dioxide , and thereby turns wort into beer. In addition to fermenting the beer, yeast influences the character and flavour. The dominant types of yeast used to make beer are Saccharomyces cerevisiae , known as ale yeast, and Saccharomyces pastorianus , known as lager yeast; Brettanomyces ferments lambics , and Torulaspora delbrueckii ferments Bavarian weissbier . Before

861-408: A cooling medium which can be cooled to below the freezing point , which allows a finer control over the wort-out temperature, and also enables cooling to around 10 °C (50 °F). After cooling, oxygen is often dissolved into the wort to revitalize the yeast and aid its reproduction. While boiling, it is useful to recover some of the energy used to boil the wort. On its way out of the brewery,

984-425: A degree that brewers of pale ales will add gypsum to the local water in a process known as Burtonisation . The starch source in a beer provides the fermentable material and is a key determinant of the strength and flavour of the beer. The most common starch source used in beer is malted grain. Grain is malted by soaking it in water, allowing it to begin germination , and then drying the partially germinated grain in

1107-497: A domestic scale, although by the 7th century AD beer was also being produced and sold by European monasteries . During the Industrial Revolution, the production of beer moved from artisanal manufacture to industrial manufacture , and domestic manufacture ceased to be significant by the end of the 19th century. The development of hydrometers and thermometers changed brewing by allowing the brewer more control of

1230-408: A feature used to drive the spent grain out of the vessel. The mash filter is a plate-and-frame filter. The empty frames contain the mash, including the spent grains, and have a capacity of around one hectoliter. The plates contain a support structure for the filter cloth. The plates, frames, and filter cloths are arranged in a carrier frame like so: frame, cloth, plate, cloth, with plates at each end of

1353-500: A fine powder such as diatomaceous earth (also called kieselguhr), which is added to the beer to form a filtration bed which allows liquid to pass, but holds onto suspended particles such as yeast. Filters range from rough filters that remove much of the yeast and any solids (e.g., hops, grain particles) left in the beer, to filters tight enough to strain colour and body from the beer. Filtration ratings are divided into rough, fine, and sterile. Rough filtration leaves some cloudiness in

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1476-562: A formal education in the subject from institutions such as the Siebel Institute of Technology , VLB Berlin , Heriot-Watt University , American Brewers Guild, University of California at Davis , University of Wisconsin , Olds College or Niagara College . They may hold membership in professional organisations such as the Brewers Association , Master Brewers Association , American Society of Brewing Chemists ,

1599-405: A kiln. Malting grain produces enzymes that will allow conversion from starches in the grain into fermentable sugars during the mash process. Different roasting times and temperatures are used to produce different colours of malt from the same grain. Darker malts will produce darker beers. Nearly all beer includes barley malt as the majority of the starch. This is because of its fibrous husk, which

1722-403: A less hazy product. Some beers undergo an additional fermentation in the bottle giving natural carbonation. This may be a second and/or third fermentation. They are bottled with a viable yeast population in suspension. If there is no residual fermentable sugar left, sugar or wort or both may be added in a process known as priming. The resulting fermentation generates CO 2 that is trapped in

1845-509: A more carbonated beer. When the sugars in the fermenting beer have been almost completely digested, the fermentation process slows and the yeast cells begin to die and settle at the bottom of the tank. At this stage, especially if the beer is cooled to around freezing, most of the remaining live yeast cells will quickly become dormant and settle, along with the heavier protein chains, due simply to gravity and molecular dehydration. Conditioning can occur in fermentation tanks with cooling jackets. If

1968-714: A notable exception). Heating in the brewhouse usually is achieved through pressurized steam, although direct-fire systems are not unusual in small breweries. Likewise, cooling in other areas of the brewery is typically done by cooling jackets on tanks, which allow the brewer to control precisely the temperature on each tank individually, although whole-room cooling is also common. Today, modern brewing plants perform myriad analyses on their beers for quality control purposes. Shipments of ingredients are analyzed to correct for variations. Samples are pulled at almost every step and tested for [oxygen] content, unwanted microbial infections, and other beer-aging compounds. A representative sample of

2091-475: A particular purpose, such as brewing beers with a high abv. Brewers in Bavaria had for centuries been selecting cold-fermenting yeasts by storing ("lagern") their beers in cold alpine caves. The process of natural selection meant that the wild yeasts that were most cold tolerant would be the ones that would remain actively fermenting in the beer that was stored in the caves. A sample of these Bavarian yeasts

2214-639: A port at the apex. Open fermentation vessels are also used, often for show in brewpubs, and in Europe in wheat beer fermentation. These vessels have no tops, making it easy to harvest top-fermenting yeasts. The open tops of the vessels increase the risk of contamination, but proper cleaning procedures help to control the risk. Fermentation tanks are typically made of stainless steel . Simple cylindrical tanks with beveled ends are arranged vertically, and conditioning tanks are usually laid out horizontally. A very few breweries still use wooden vats for fermentation but wood

2337-567: A range of seasonal ales. The permanent ales are: Summit ( 4.2% ABV ) - A cask-conditioned pale ale Barista Stout ( 4.2% ABV ) - A nitrogen infused, coffee flavoured stout Pale (4.5% ABV) – A hoppy, cold filtered and unpasteurised pale ale Best Bitter ( 3.8% ABV ) was awarded First Prize in the 1910 London Brewers Exhibition. XB ( 4.5% ABV ) - A stronger bitter Mild ( 3.5% ABV ) - A dry Dark Mild Lightfoot ( 4.1% ABV ) - Golden in colour and bitter in taste Old Peculier ( 5.6% ABV ) - An old ale made under this name since

2460-591: A secondary fermentation may also occur in the cask or bottle . There are several additional brewing methods , such as Burtonisation , double dropping , and Yorkshire Square , as well as post-fermentation treatment such as filtering , and barrel-ageing . Brewing has taken place since around the 6th millennium BC, and archaeological evidence suggests emerging civilizations including China , ancient Egypt , and Mesopotamia brewed beer. Descriptions of various beer recipes can be found in cuneiform (the oldest known writing) from ancient Mesopotamia . In Mesopotamia

2583-417: A section of them. Filtering stabilises the flavour of beer, holding it at a point acceptable to the brewer, and preventing further development from the yeast, which under poor conditions can release negative components and flavours. Filtering also removes haze, clearing the beer, and so giving it a "polished shine and brilliance". Beer with a clear appearance has been commercially desirable for brewers since

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2706-402: A solid) out of the beer along with protein solids and are found only in trace amounts in the finished product. This process makes the beer appear bright and clean, rather than the cloudy appearance of ethnic and older styles of beer such as wheat beers . Examples of clarifying agents include isinglass , obtained from swim bladders of fish; Irish moss , a seaweed; kappa carrageenan , from

2829-760: A starch source, such as malted barley , able to be fermented (converted into alcohol); a brewer's yeast to produce the fermentation; and a flavouring, such as hops , to offset the sweetness of the malt. A mixture of starch sources may be used, with a secondary saccharide, such as maize (corn), rice, or sugar, these often being termed adjuncts , especially when used as a lower-cost substitute for malted barley. Less widely used starch sources include millet , sorghum , and cassava root in Africa, potato in Brazil, and agave in Mexico, among others. The most common starch source

2952-543: A very few breweries still use wooden vats for fermentation as wood is difficult to keep clean and infection-free and must be repitched more or less yearly. There are three main fermentation methods, warm , cool , and wild or spontaneous . Fermentation may take place in open or closed vessels. There may be a secondary fermentation which can take place in the brewery, in the cask or in the bottle . Brewing yeasts are traditionally classed as "top-cropping" (or "top-fermenting") and "bottom-cropping" (or "bottom-fermenting");

3075-438: Is added to the finished beer. The active yeast will restart fermentation in the finished beer, and so introduce fresh carbon dioxide; the conditioning tank will be then sealed so that the carbon dioxide is dissolved into the beer producing a lively "condition" or level of carbonation. The kräusening method may also be used to condition bottled beer. Lagers are stored at cellar temperature or below for 1–6 months while still on

3198-425: Is an optional process. Many craft brewers simply remove the coagulated and settled solids and forgo active filtration. In localities where a tax assessment is collected by government pursuant to local laws, any additional filtration may be done using an active filtering system, the filtered product finally passing into a calibrated vessel for measurement just after any cold conditioning and prior to final packaging where

3321-467: Is called saccharification which occurs between the temperatures 60–70 °C (140–158 °F). The result of the mashing process is a sugar-rich liquid or "wort" , which is then strained through the bottom of the mash tun in a process known as lautering . Prior to lautering, the mash temperature may be raised to about 75–78 °C (167–172 °F) (known as a mashout) to free up more starch and reduce mash viscosity. Additional water may be sprinkled on

3444-399: Is conducted so that it is even and intense – a continuous "rolling boil". The boil on average lasts between 45 and 90 minutes, depending on its intensity, the hop addition schedule, and volume of water the brewer expects to evaporate. At the end of the boil, solid particles in the hopped wort are separated out, usually in a vessel called a "whirlpool". Copper is the traditional material for

3567-470: Is cooled in open vats (called " coolships "), where the yeasts and microbiota present in the brewery (such as Brettanomyces ) are allowed to settle to create a spontaneous fermentation, and are then conditioned or matured in oak barrels for typically one to three years. After an initial or primary fermentation, beer is conditioned , matured or aged, in one of several ways, which can take from 2 to 4 weeks, several months, or several years, depending on

3690-513: Is credited with developing the refrigeration machine in 1871. Refrigeration allowed beer to be produced year-round, and always at the same temperature. Yeast is very sensitive to temperature, and, if a beer were produced during summer, the yeast would impart unpleasant flavours onto the beer. Most brewers would produce enough beer during winter to last through the summer, and store it in underground cellars, or even caves, to protect it from summer's heat. The discovery of microbes by Louis Pasteur

3813-505: Is difficult to keep clean and infection-free and must be repitched often, perhaps yearly. After high kräusen, the point at which fermentation is most active and copious foam is produced, a valve known in German as the spundapparat may be put on the tanks to allow the carbon dioxide produced by the yeast to naturally carbonate the beer. This bung device can regulate the pressure to produce different types of beer; greater pressure produces

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3936-401: Is fully distributed through the beer while it is fermenting, and both equally flocculate (clump together and precipitate to the bottom of the vessel) when fermentation is finished. By no means do all top-cropping yeasts demonstrate this behaviour, but it features strongly in many English yeasts that may also exhibit chain forming (the failure of budded cells to break from the mother cell), which

4059-718: Is ground cereal or "grist" - the proportion of the starch or cereal ingredients in a beer recipe may be called grist, grain bill, or simply mash ingredients . Beer is composed mostly of water. Regions have water with different mineral components; as a result, different regions were originally better suited to making certain types of beer, thus giving them a regional character. For example, Dublin has hard water well suited to making stout , such as Guinness ; while Pilsen has soft water well suited to making pale lager , such as Pilsner Urquell . The waters of Burton in England contain gypsum , which benefits making pale ale to such

4182-580: Is important not only in the sparging stage of brewing (in which water is washed over the mashed barley grains to form the wort ) but also as a rich source of amylase , a digestive enzyme that facilitates conversion of starch into sugars. Other malted and unmalted grains (including wheat, rice, oats, and rye , and, less frequently, maize (corn) and sorghum) may be used. In recent years, a few brewers have produced gluten-free beer made with sorghum with no barley malt for people who cannot digest gluten -containing grains like wheat, barley, and rye. Hops are

4305-513: Is in the technical sense different from true flocculation. The most common top-cropping brewer's yeast, Saccharomyces cerevisiae , is the same species as the common baking yeast. However, baking and brewing yeasts typically belong to different strains, cultivated to favour different characteristics: baking yeast strains are more aggressive, in order to carbonate dough in the shortest amount of time; brewing yeast strains act slower, but tend to tolerate higher alcohol concentrations (normally 12–15% abv

4428-426: Is kilning when the malt goes through a very high temperature drying in a kiln; with gradual temperature increase over several hours. When kilning is complete, the grains are now termed malt , and they will be milled or crushed to break apart the kernels and expose the cotyledon , which contains the majority of the carbohydrates and sugars; this makes it easier to extract the sugars during mashing. Mashing converts

4551-571: Is less clear in modern brewing with the use of cylindro-conical tanks. Generally, warm-fermented beers, which are usually termed ale , are ready to drink within three weeks after the beginning of fermentation, although some brewers will condition or mature them for several months. When a beer has been brewed using a cool fermentation of around 10 °C (50 °F), compared to typical warm fermentation temperatures of 18 °C (64 °F), then stored (or lagered) for typically several weeks (or months) at temperatures close to freezing point, it

4674-531: Is matched by the diversity of processes, degrees of automation , and kinds of beer produced in breweries. A brewery is typically divided into distinct sections, with each section reserved for one part of the brewing process. Beer may have been known in Neolithic Europe and was mainly brewed on a domestic scale. In some form, it can be traced back almost 5000 years to Mesopotamian writings describing daily rations of beer and bread to workers. Before

4797-443: Is pumped into the heat exchanger, and goes through every other gap between the plates. The cooling medium, usually water from a cold liquor tank , goes through the other gaps. The ridges in the plates ensure turbulent flow. A good heat exchanger can drop 95 °C (203 °F) wort to 20 °C (68 °F) while warming the cooling medium from about 10 °C (50 °F) to 80 °C (176 °F). The last few plates often use

4920-420: Is recorded. Before the thirteenth century, beer was flavoured with plants such as yarrow , wild rosemary , and bog myrtle , and other ingredients such as juniper berries , aniseed and ginger , which would be combined into a mixture known as gruit and used as hops are now used; between the thirteenth and the sixteenth century, during which hops took over as the dominant flavouring, beer flavoured with gruit

5043-414: Is termed a " lager ". During the lagering or storage phase several flavour components developed during fermentation dissipate, resulting in a "cleaner" flavour. Though it is the slow, cool fermentation and cold conditioning (or lagering) that defines the character of lager, the main technical difference is with the yeast generally used, which is Saccharomyces pastorianus . Technical differences include

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5166-876: Is the maximum, though under special treatment some ethanol-tolerant strains can be coaxed up to around 20%). Modern quantitative genomics has revealed the complexity of Saccharomyces species to the extent that yeasts involved in beer and wine production commonly involve hybrids of so-called pure species. As such, the yeasts involved in what has been typically called top-cropping or top-fermenting ale may be both Saccharomyces cerevisiae and complex hybrids of Saccharomyces cerevisiae and Saccharomyces kudriavzevii . Three notable ales, Chimay , Orval and Westmalle , are fermented with these hybrid strains, which are identical to wine yeasts from Switzerland. In general, yeasts such as Saccharomyces cerevisiae are fermented at warm temperatures between 15 and 20 °C (59 and 68 °F), occasionally as high as 24 °C (75 °F), while

5289-422: Is the process in which the beer ages, the flavour becomes smoother, and flavours that are unwanted dissipate. After conditioning for a week to several months, the beer may be filtered and force carbonated for bottling, or fined in the cask . Mashing is the process of combining a mix of milled grain (typically malted barley with supplementary grains such as corn , sorghum , rye or wheat), known as

5412-571: Is typically around 60°, an angle that will allow the yeast to flow towards the cone's apex, but is not so steep as to take up too much vertical space. CCVs can handle both fermenting and conditioning in the same tank. At the end of fermentation, the yeast and other solids which have fallen to the cone's apex can be simply flushed out of a port at the apex. Open fermentation vessels are also used, often for show in brewpubs, and in Europe in wheat beer fermentation. These vessels have no tops, which makes harvesting top-fermenting yeasts very easy. The open tops of

5535-447: Is used to cool the wort in a heat exchanger, the water is significantly warmed. In an efficient brewery, cold water is passed through the heat exchanger at a rate set to maximize the water's temperature upon exiting. This now-hot water is then stored in a hot water tank. Fermentation takes place in fermentation vessels which come in various forms, from enormous cylindroconical vessels, through open stone vessels, to wooden vats. After

5658-409: Is where chemical reactions take place, including sterilization of the wort to remove unwanted bacteria, releasing of hop flavours, bitterness and aroma compounds through isomerization , stopping of enzymatic processes, precipitation of proteins, and concentration of the wort. Finally, the vapours produced during the boil volatilise off-flavours , including dimethyl sulfide precursors. The boil

5781-526: The Institute of Brewing and Distilling , and the Society of Independent Brewers . Depending on a brewery's size, a brewer may need anywhere from five to fifteen years of professional experience before becoming a brewmaster. Brewing Brewing is the production of beer by steeping a starch source (commonly cereal grains, the most popular of which is barley ) in water and fermenting

5904-763: The UEFA Champions League with its namesake lager; Carlsberg sponsors the English Premier League as well as the 2012 and 2016 UEFA European Championships . Meanwhile, the AB InBev Group supports the FA Cup and the FIFA World Cup . The head brewer (UK) or brewmaster (US) is in charge of the production of beer. The major breweries employ engineers with a chemistry / biotechnology background. Brewmasters may have had

6027-611: The brewer expects to evaporate . Fermentation begins as soon as yeast is added to the cooled wort. This is also the point at which the product is first called beer. It is during this stage that fermentable sugars won from the malt (maltose, maltotriose, glucose, fructose and sucrose) are metabolized into alcohol and carbon dioxide . Fermentation tanks come in many shapes and sizes, from enormous cylindroconical vessels that can look like storage silos , to 20- litre (5  US gal ) glass carboys used by homebrewers. Most breweries today use cylindroconical vessels (CCVs), which have

6150-441: The starch in the grain into sugars, typically maltose to create a malty liquid called wort . There are two main methods – infusion mashing, in which the grains are heated in one vessel; and decoction mashing, in which a proportion of the grains are boiled and then returned to the mash, raising the temperature. Mashing involves pauses at certain temperatures (notably 45–62–73 °C or 113–144–163 °F), and takes place in

6273-438: The starches in the grain into sugars , especially maltose . Lautering is the separation of the extracts won during mashing from the spent grain to create wort . It is achieved in either a lauter tun , a wide vessel with a false bottom, or a mash filter, a plate-and-frame filter designed for this kind of separation. Lautering has two stages: first wort run-off, during which the extract is separated in an undiluted state from

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6396-399: The yeast . This in turn creates a beer lower in body and higher in alcohol. A rest closer to the higher end of the range favours α-amylase enzymes, creating more higher-order sugars and dextrins which are less fermentable by the yeast, so a fuller-bodied beer with less alcohol is the result. Duration and pH variances also affect the sugar composition of the resulting wort. Lautering is

6519-413: The "grist" or "grain bill", and water, known as "liquor", and heating this mixture in a vessel called a "mash tun". Mashing is a form of steeping, and defines the act of brewing, such as with making tea, sake , and soy sauce . Technically, wine, cider and mead are not brewed but rather vinified , as there is no steeping process involving solids. Mashing allows the enzymes in the malt to break down

6642-504: The 1960s. To meet growing demand T&R Theakston bought the UK Government owned Carlisle State Management Brewery . The transaction put financial strain on the business which was taken over in 1987 by Blackburn based brewer, Matthew Brown & Co Ltd. Matthew Brown was itself taken over by Scottish & Newcastle the same year. Following these transactions, the brewing of some Theakston beers, including Theakston Best Bitter,

6765-844: The Black Bull pub and brewhouse in College Lane, Masham. By 1832, Theakston had sole ownership of the brewery and in 1875 he passed control over to his sons Thomas and Robert. They formed the T&;R Theakston partnership and constructed a new brewery on Paradise Fields, near the original site. In 1919, the company acquired the Lightfoot Brewery, also in Masham, now home to The White Bear. The business grew in North Yorkshire and benefitted from renewed interest in cask ale in

6888-432: The ability of lager yeast to metabolize melibiose , and the tendency to settle at the bottom of the fermenter (though ale yeasts can also become bottom settling by selection); though these technical differences are not considered by scientists to be influential in the character or flavour of the finished beer, brewers feel otherwise - sometimes cultivating their own yeast strains which may suit their brewing equipment or for

7011-437: The activity of brewer's yeast over less desirable microorganisms; and they aid in "head retention", the length of time that the foam on top of the beer (the beer head ) will last. The preservative in hops comes from the lupulin glands which contain soft resins with alpha and beta acids. Though much studied, the preservative nature of the soft resins is not yet fully understood, though it has been observed that unless stored at

7134-622: The adverts printed on football team's kit. For example, Liverpool F.C. had the logo of the Denmark-based Carlsberg brewery group on the front of its shirts for nearly twenty years, from 1992 to 2010. Nowadays major brewing corporations are involved in sponsorship on a number of different levels. The prevailing trend is for the leading brand not to be linked to individual teams; rather, they achieve visibility as sponsor of tournaments and leagues, so all fans can engage with them regardless of which team they support. Heineken sponsors

7257-417: The air, it is possible that beer-like beverages were independently developed throughout the world soon after a tribe or culture had domesticated cereal. Chemical tests of ancient pottery jars reveal that beer was produced as far back as about 7,000 years ago in what is today Iran. This discovery reveals one of the earliest known uses of fermentation and is the earliest evidence of brewing to date. In Mesopotamia,

7380-627: The beer is put into the containers for shipment or sale. The container may be a bottle , can , of keg , cask or bulk tank. Filters come in many types. Many use pre-made filtration media such as sheets or candles. Kieselguhr, a fine powder of diatomaceous earth , can be introduced into the beer and circulated through screens to form a filtration bed. Filtration ratings are divided into rough, fine, and sterile. Rough filters remove yeasts and other solids, leaving some cloudiness, while finer filters can remove body and color. Sterile filters remove almost all microorganisms. Brewing companies range widely in

7503-599: The beer to be hazy. This rest is generally used only with undermodified (i.e. undermalted) malts which are decreasingly popular in Germany and the Czech Republic, or non-malted grains such as corn and rice, which are widely used in North American beers. A mash rest at 60 °C (140 °F) activates β- glucanase , which breaks down gummy β-glucans in the mash, making the sugars flow out more freely later in

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7626-491: The beer's marketing, sales, and distribution, while leaving the brewing and packaging to the producer-brewery (which confusingly may also be referred to as a contract brewer). Often the contract brewing is performed when a small brewery can not supply enough beer to meet demands and contracts with a larger brewery to help alleviate their supply issues. Some breweries do not own a brewing facility, these contract brewers have been criticized by traditional brewing companies for avoiding

7749-503: The beer. The most common starch source is ground cereal or "grist" - the proportion of the starch or cereal ingredients in a beer recipe may be called grist, grain bill, or simply mash ingredients . Steps in the brewing process include malting , milling , mashing , lautering , boiling , fermenting , conditioning , filtering , and packaging . There are three main fermentation methods: warm , cool and spontaneous . Fermentation may take place in an open or closed fermenting vessel;

7872-435: The boiling vessel for two main reasons: firstly because copper transfers heat quickly and evenly; secondly because the bubbles produced during boiling, which could act as an insulator against the heat, do not cling to the surface of copper, so the wort is heated in a consistent manner. The simplest boil kettles are direct-fired, with a burner underneath. These can produce a vigorous and favourable boil, but are also apt to scorch

7995-402: The bottle, remaining in solution and providing natural carbonation. Bottle-conditioned beers may be either filled unfiltered direct from the fermentation or conditioning tank, or filtered and then reseeded with yeast. Cask ale (or cask-conditioned beer) is unfiltered , unpasteurised beer that is conditioned by a secondary fermentation in a metal, plastic or wooden cask. It is dispensed from

8118-470: The brew kettle, larger breweries use a separate tank, and design will differ, with tank floors either flat, sloped, conical or with a cup in the centre. The principle in all is that by swirling the wort the centripetal force will push the trub into a cone at the centre of the bottom of the tank, where it can be easily removed. A hopback is a traditional additional chamber that acts as a sieve or filter by using whole hops to clear debris (or " trub ") from

8241-499: The brewer more control of the process, and greater knowledge of the results. Breweries today are made predominantly of stainless steel , although vessels often have a decorative copper cladding for a nostalgic look. Stainless steel has many favourable characteristics that make it a well-suited material for brewing equipment. It imparts no flavour in beer, it reacts with very few chemicals, which means almost any cleaning solution can be used on it (concentrated chlorine [bleach] being

8364-500: The brewer's craft was the only profession which derived social sanction and divine protection from female deities/goddesses, specifically: Ninkasi , who covered the production of beer, Siris , who was used in a metonymic way to refer to beer, and Siduri , who covered the enjoyment of beer. In pre-industrial times, and in developing countries, women are frequently the main brewers. As almost any cereal containing certain sugars can undergo spontaneous fermentation due to wild yeasts in

8487-437: The brewer's intention for the beer. The beer is usually transferred into a second container, so that it is no longer exposed to the dead yeast and other debris (also known as " trub ") that have settled to the bottom of the primary fermenter. This prevents the formation of unwanted flavours and harmful compounds such as acetaldehyde . Kräusening (pronounced KROY -zen-ing ) is a conditioning method in which fermenting wort

8610-461: The brewery. It gave brewers the ability to mix liquids more reliably while heating, particularly the mash , to prevent scorching, and a quick way to transfer liquid from one container to another. Almost all breweries now use electric-powered stirring mechanisms and pumps. The steam engine also allowed the brewer to make greater quantities of beer, as human power was no longer a limiting factor in moving and stirring. Carl von Linde , along with others,

8733-578: The brewhouse, and fermentation and packaging took place in lined wooden containers. Such breweries were common until the Industrial Revolution , when better materials became available, and scientific advances led to a better understanding of the brewing process. Today, almost all brewery equipment is made of stainless steel . During the Industrial Revolution, the production of beer moved from artisanal manufacture to industrial manufacture , and domestic manufacture ceased to be significant by

8856-434: The brewing process. Malting is the process where barley grain is made ready for brewing. Malting is broken down into three steps in order to help to release the starches in the barley. First, during steeping, the grain is added to a vat with water and allowed to soak for approximately 40 hours. During germination , the grain is spread out on the floor of the germination room for around 5 days. The final part of malting

8979-461: The cask by being either poured from a tap by gravity, or pumped up from a cellar via a beer engine (hand pump). Sometimes a cask breather is used to keep the beer fresh by allowing carbon dioxide to replace oxygen as the beer is drawn off the cask. Until 2018, the Campaign for Real Ale (CAMRA) defined real ale as beer "served without the use of extraneous carbon dioxide ", which would disallow

9102-403: The cooled wort goes into a fermentation tank. A type of yeast is selected and added, or "pitched", to the fermentation tank. When the yeast is added to the wort, the fermenting process begins, where the sugars turn into alcohol, carbon dioxide and other components. When the fermentation is complete the brewer may rack the beer into a new tank, called a conditioning tank. Conditioning of the beer

9225-825: The costs associated with a physical brewery. Gypsy, or nomad, brewing usually falls under the category of contract brewing. Gypsy breweries generally do not have their own equipment or premises. They operate on a temporary or itinerant basis out of the facilities of another brewery, generally making "one-off" special occasion beers. The trend of gypsy brewing spread early in Scandinavia . Their beers and collaborations later spread to America and Australia. Gypsy brewers typically use facilities of larger makers with excess capacity . Prominent examples include Pretty Things, Stillwater Artisanal Ales, Gunbarrel Brewing Company, Mikkeller , and Evil Twin . For example, one of Mikkeller's founders, Mikkel Borg Bjergsø, has traveled around

9348-403: The development of glass vessels for storing and drinking beer, along with the commercial success of pale lager , which - due to the lagering process in which haze and particles settle to the bottom of the tank and so the beer " drops bright " (clears) - has a natural bright appearance and shine. There are several forms of filters; they may be in the form of sheets or "candles", or they may be

9471-487: The early 1800s. In 1989, the cask version of Old Peculier was voted Champion Strong Ale of Britain at the Great British Beer Festival. In 2000, the beer won the silver medal in the Campaign for Real Ale ’s Champion Winter Beer of Britain competition. It was voted Champion of Champions in the 2007 Yorkshire Beer Championship. It is named after the peculier of Masham , a peculier being a parish outside

9594-520: The end of the 19th century. In addition to changes in manufacturing capacity, the number of breweries grew throughout industrialization. For example in America, number of breweries rose from 431 to 4,131 between 1850 and 1873. A handful of major breakthroughs have led to the modern brewery and its ability to produce the same beer consistently. The steam engine , vastly improved in 1775 by James Watt , brought automatic stirring mechanisms and pumps into

9717-505: The female flower clusters or seed cones of the hop vine Humulus lupulus , which are used as a flavouring and preservative agent in nearly all beer made today. Hops had been used for medicinal and food flavouring purposes since Roman times; by the 7th century in Carolingian monasteries in what is now Germany, beer was being made with hops, though it isn't until the thirteenth century that widespread cultivation of hops for use in beer

9840-413: The finished product often is stored for months for comparison, when complaints are received. Brewing is typically divided into 9 steps: milling, malting, mashing, lautering, boiling, fermenting, conditioning, filtering, and filling. Mashing is the process of mixing milled , usually malted , grain with water, and heating it with rests at certain temperatures to allow enzymes in the malt to break down

9963-642: The four largest brewing companies ( Anheuser-Busch InBev , SABMiller , Heineken International , and Carlsberg Group ) controlled 50% of the market The biggest brewery in the world is the Belgian company Anheuser-Busch InBev . In the United States, there were 69,359 people employed in breweries in 2017. This is up from 27,805 in 2001. Some commonly used descriptions of breweries are: Contract brewing –When one brewery hires another brewery to produce its beer. The contracting brewer generally handles all of

10086-404: The grains is rinsed off with hot water. The lauter tun is a tank with holes in the bottom small enough to hold back the large bits of grist and hulls (the ground or milled cereal). The bed of grist that settles on it is the actual filter. Some lauter tuns have provision for rotating rakes or knives to cut into the bed of grist to maintain good flow. The knives can be turned so they push the grain,

10209-519: The grains to extract additional sugars (a process known as sparging ). The wort is moved into a large tank known as a "copper" or kettle where it is boiled with hops and sometimes other ingredients such as herbs or sugars. This stage is where many chemical reactions take place, and where important decisions about the flavour, colour, and aroma of the beer are made. The boiling process serves to terminate enzymatic processes, precipitate proteins, isomerize hop resins , and concentrate and sterilize

10332-501: The hopped wort are separated out, usually in a vessel called a "whirlpool" or "settling tank". The whirlpool was devised by Henry Ranulph Hudston while working for the Molson Brewery in 1960 to utilise the so-called tea leaf paradox to force the denser solids known as "trub" (coagulated proteins, vegetable matter from hops) into a cone in the centre of the whirlpool tank. Whirlpool systems vary: smaller breweries tend to use

10455-419: The hops contact the hot wort. While a hopback has a similar filtering effect as a whirlpool, it operates differently: a whirlpool uses centrifugal forces, a hopback uses a layer of whole hops to act as a filter bed. Furthermore, while a whirlpool is useful only for the removal of pelleted hops (as flowers do not tend to separate as easily), in general hopbacks are used only for the removal of whole flower hops (as

10578-494: The jurisdiction of a diocese. In 1985, The Economist dubbed it the "doyen of real ales". In 2022, Theakston launched Paradise Gold Dry Vintage Cider (6.8% ABV) . Theakston has one of the last remaining full-time brewery coopers in the country. Euan Findlay makes oak casks for Old Peculier beer. A cooper’s apprenticeship lasts four years and is marked by a ‘Trussing-In’ ceremony on completion. Euan’s ceremony in October 2021

10701-449: The modern era; after the widespread application of brewing mycology it was discovered that the two separate collecting methods involved two different yeast species that favoured different temperature regimes, namely Saccharomyces cerevisiae in top-cropping at warmer temperatures and Saccharomyces pastorianus in bottom-cropping at cooler temperatures. As brewing methods changed in the 20th century, cylindro-conical fermenting vessels became

10824-401: The most common a plate-style. Water or glycol run in channels in the opposite direction of the wort, causing a rapid drop in temperature. It is very important to quickly cool the wort to a level where yeast can be added safely as yeast is unable to grow in very high temperatures, and will start to die in temperatures above 60 °C (140 °F). After the wort goes through the heat exchanger,

10947-520: The norm and the collection of yeast for both Saccharomyces species is done from the bottom of the fermenter. Thus the method of collection no longer implies a species association. There are a few remaining breweries who collect yeast in the top-cropping method, such as Samuel Smiths brewery in Yorkshire, Marstons in Staffordshire and several German hefeweizen producers. For both types, yeast

11070-533: The oldest evidence of beer is believed to be a 6,000-year-old Sumerian tablet depicting people drinking a beverage through reed straws from a communal bowl . A 3900-year-old Sumerian poem honouring Ninkasi, the patron goddess of brewing, contains the oldest surviving beer recipe, describing the production of beer from barley via bread. The invention of bread and beer has been argued to be responsible for humanity's ability to develop technology and build civilization. The earliest chemically confirmed barley beer to date

11193-445: The particles left by pellets tend to make it through the hopback). The hopback has mainly been substituted in modern breweries by the whirlpool. After the whirlpool, the wort must be brought down to fermentation temperatures 20–26 °C (68–79 °F) before yeast is added. In modern breweries this is achieved through a plate heat exchanger . A plate heat exchanger has sereral ridged plates, which form two separate paths. The wort

11316-455: The process, and greater knowledge of the results. Today, the brewing industry is a global business, consisting of several dominant multinational companies and many thousands of smaller producers ranging from brewpubs to regional breweries . More than 133 billion litres (35 billion gallons) are sold per year—producing total global revenues of $ 294.5 billion (£147.7 billion) in 2006. The basic ingredients of beer are water;

11439-483: The process. In the modern mashing process, commercial fungal based β-glucanase may be added as a supplement. Finally, a mash rest temperature of 65–71 °C (149–160 °F) is used to convert the starches in the malt to sugar, which is then usable by the yeast later in the brewing process. Doing the latter rest at the lower end of the range favours β-amylase enzymes, producing more low-order sugars like maltotriose , maltose , and glucose which are more fermentable by

11562-470: The responsibility of making beer to men. The oldest, still functional, brewery in the world is believed to be the German state-owned Weihenstephan brewery in the city of Freising , Bavaria . It can trace its history back to 1040 AD. The nearby Weltenburg Abbey brewery, can trace back its beer-brewing tradition to at least 1050 AD. The Žatec brewery in the Czech Republic claims it can prove that it paid

11685-474: The resulting sweet liquid with yeast . It may be done in a brewery by a commercial brewer, at home by a homebrewer , or communally. Brewing has taken place since around the 6th millennium BC, and archaeological evidence suggests that emerging civilizations, including ancient Egypt , China , and Mesopotamia , brewed beer. Since the nineteenth century the brewing industry has been part of most western economies. The basic ingredients of beer are water and

11808-417: The rise of production breweries, the production of beer took place at home and was the domain of women, as baking and brewing were seen as "women's work". Breweries, as production facilities reserved for making beer, did not emerge until monasteries and other Christian institutions started producing beer not only for their own consumption but also to use as payment. This industrialization of brewing shifted

11931-641: The role of yeast in fermentation was understood, fermentation involved wild or airborne yeasts, and a few styles such as lambics still use this method today. Emil Christian Hansen , a Danish biochemist employed by the Carlsberg Laboratory , developed pure yeast cultures which were introduced into the Carlsberg brewery in 1883, and pure yeast strains are now the main fermenting source used worldwide. Some brewers add one or more clarifying agents to beer, which typically precipitate (collect as

12054-585: The seaweed kappaphycus ; polyclar (a commercial brand of clarifier); and gelatin . If a beer is marked "suitable for Vegans", it was generally clarified either with seaweed or with artificial agents, although the "Fast Cask" method invented by Marston's in 2009 may provide another method. There are several steps in the brewing process, which may include malting, mashing, lautering, boiling , fermenting , conditioning , filtering , and packaging . The brewing equipment needed to make beer has grown more sophisticated over time, and now covers most aspects of

12177-406: The separation of the wort (the liquid containing the sugar extracted during mashing) from the grains. This is done either in a mash tun outfitted with a false bottom, in a lauter tun, or in a mash filter. Most separation processes have two stages: first wort run-off, during which the extract is separated in an undiluted state from the spent grains, and sparging , in which extract which remains with

12300-404: The spent grains, and sparging , in which extract that remains with the grains is rinsed off with hot water. Boiling the wort ensures its sterility, helping to prevent contamination with undesirable microbes. During the boil, hops are added, which contribute aroma and flavour compounds to the beer, especially their characteristic bitterness. Along with the heat of the boil, they cause proteins in

12423-462: The starches released during the malting stage into sugars that can be fermented. The milled grain is mixed with hot water in a large vessel known as a mash tun . In this vessel, the grain and water are mixed together to create a cereal mash. During the mash, naturally occurring enzymes present in the malt convert the starches (long chain carbohydrates) in the grain into smaller molecules or simple sugars (mono-, di-, and tri-saccharides). This "conversion"

12546-429: The steam created during the boil is passed over a coil through which unheated water flows. By adjusting the rate of flow, the output temperature of the water can be controlled. This is also often done using a plate heat exchanger. The water is then stored for later use in the next mash, in equipment cleaning, or wherever necessary. Another common method of energy recovery takes place during the wort cooling. When cold water

12669-421: The structure. Newer mash filters have bladders that can press the liquid out of the grains between spargings. The grain does not act like a filtration medium in a mash filter. After mashing, the beer wort is boiled with hops (and other flavourings if used) in a large tank known as a "copper" or brew kettle – though historically the mash vessel was used and is still in some small breweries. The boiling process

12792-474: The supply of pure cultured yeast to brewers across Europe. This yeast strain was originally classified as Saccharomyces carlsbergensis , a now defunct species name which has been superseded by the currently accepted taxonomic classification Saccharomyces pastorianus . Lambic beers are historically brewed in Brussels and the nearby Pajottenland region of Belgium without any yeast inoculation. The wort

12915-481: The unfermented (or "green") wort , as the whirlpool does, and also to increase hop aroma in the finished beer. It is a chamber between the brewing kettle and wort chiller. Hops are added to the chamber, the hot wort from the kettle is run through it, and then immediately cooled in the wort chiller before entering the fermentation chamber. Hopbacks utilizing a sealed chamber facilitate maximum retention of volatile hop aroma compounds that would normally be driven off when

13038-631: The use of a cask breather, a policy which was reversed in April 2018 to allow beer served with the use of cask breathers to meet its definition of real ale. Barrel-ageing ( US: Barrel aging) is the process of ageing beer in wooden barrels to achieve a variety of effects in the final product. Sour beers such as lambics are fully fermented in wood, while other beers are aged in barrels which were previously used for maturing wines or spirits . In 2016 "Craft Beer and Brewing" wrote: "Barrel-aged beers are so trendy that nearly every taphouse and beer store has

13161-400: The vessels make the risk of infection greater, but with proper cleaning procedures and careful protocol about who enters fermentation chambers, the risk can be well controlled. Fermentation tanks are typically made of stainless steel. If they are simple cylindrical tanks with beveled ends, they are arranged vertically, as opposed to conditioning tanks which are usually laid out horizontally. Only

13284-408: The volume and variety of beer produced, ranging from small breweries to massive multinational conglomerates, like Molson Coors or Anheuser-Busch InBev , that produce hundreds of millions of barrels annually. There are organizations that assist the development of brewing, such as the Siebel Institute of Technology in the United States and the Institute of Brewing and Distilling in the UK. In 2012

13407-412: The whole fermentation cellar is cooled, conditioning must be done in separate tanks in a separate cellar. Some beers are conditioned only lightly, or not at all. An active yeast culture from an ongoing batch may be added to the next boil after a slight chilling in order to produce fresh and highly palatable beer in mass quantity. Filtering the beer stabilizes flavour and gives it a polished, shiny look. It

13530-512: The world between 2006 and 2010, brewing more than 200 different beers at other breweries. Breweries and football have had a symbiotic relationship since the very beginnings of the game. The English Football League was founded in 1888, and by the next decade several teams already had their own brewery sponsor. In return for their financial support, the breweries were given concessions to sell beer to spectators and advertise their products in stadiums. The most outwardly visible sign of sponsorship are

13653-400: The wort is cooled and aerated – usually with sterile air – yeast is added to it, and it begins to ferment. It is during this stage that sugars won from the malt are converted into alcohol and carbon dioxide , and the product can be called beer for the first time. Most breweries today use cylindroconical vessels, or CCVs, which have a conical bottom and a cylindrical top. The cone's angle

13776-400: The wort to coagulate and the pH of the wort to fall, and they inhibit the later growth of certain bacteria. Finally, the vapours produced during the boil volatilize off-flavours , including dimethyl sulfide precursors. The boil must be conducted so that it is even and intense. The boil lasts between 60 and 120 minutes, depending on its intensity, the hop addition schedule, and volume of wort

13899-421: The wort where the flame touches the kettle, causing caramelisation and making cleanup difficult. Most breweries use a steam-fired kettle, which uses steam jackets in the kettle to boil the wort. Breweries usually have a boiling unit either inside or outside of the kettle, usually a tall, thin cylinder with vertical tubes, called a calandria, through which wort is pumped. At the end of the boil, solid particles in

14022-445: The wort. Hops add flavour, aroma and bitterness to the beer. At the end of the boil, the hopped wort settles to clarify in a vessel called a "whirlpool", where the more solid particles in the wort are separated out. After the whirlpool, the wort is drawn away from the compacted hop trub, and rapidly cooled via a heat exchanger to a temperature where yeast can be added. A variety of heat exchanger designs are used in breweries, with

14145-419: The yeast used by Brasserie Dupont for saison ferments even higher at 29 to 35 °C (84 to 95 °F). They generally form a foam on the surface of the fermenting beer, which is called barm , as during the fermentation process its hydrophobic surface causes the flocs to adhere to CO 2 and rise; because of this, they are often referred to as "top-cropping" or "top-fermenting" – though this distinction

14268-427: The yeast. The process of storing, or conditioning, or maturing, or aging a beer at a low temperature for a long period is called "lagering", and while it is associated with lagers, the process may also be done with ales, with the same result – that of cleaning up various chemicals, acids and compounds. During secondary fermentation, most of the remaining yeast will settle to the bottom of the second fermenter, yielding

14391-415: The yeasts classed as top-fermenting are generally used in warm fermentations, where they ferment quickly, and the yeasts classed as bottom-fermenting are used in cooler fermentations where they ferment more slowly. Yeast were termed top or bottom cropping, because the yeast was collected from the top or bottom of the fermenting wort to be reused for the next brew. This terminology is somewhat inappropriate in

14514-461: Was discovered at Godin Tepe in the central Zagros Mountains of Iran, where fragments of a jug, at least 5,000 years old was found to be coated with beerstone , a by-product of the brewing process. Beer may have been known in Neolithic Europe as far back as 5,000 years ago, and was mainly brewed on a domestic scale. Ale produced before the Industrial Revolution continued to be made and sold on

14637-589: Was instrumental in the control of fermentation. The idea that yeast was a microorganism that worked on wort to produce beer led to the isolation of a single yeast cell by Emil Christian Hansen . Pure yeast cultures allow brewers to pick out yeasts for their fermentation characteristics, including flavor profiles and fermentation ability. Some breweries in Belgium, however, still rely on "spontaneous" fermentation for their beers (see lambic ). The development of hydrometers and thermometers changed brewing by allowing

14760-651: Was known as ale, while beer flavoured with hops was known as beer. Some beers today, such as Fraoch by the Scottish Heather Ales company and Cervoise Lancelot by the French Brasserie-Lancelot company, use plants other than hops for flavouring. Hops contain several characteristics that brewers desire in beer: they contribute a bitterness that balances the sweetness of the malt; they provide floral, citrus, and herbal aromas and flavours; they have an antibiotic effect that favours

14883-724: Was sent from the Spaten brewery in Munich to the Carlsberg brewery in Copenhagen in 1845 who began brewing with it. In 1883 Emile Hansen completed a study on pure yeast culture isolation and the pure strain obtained from Spaten went into industrial production in 1884 as Carlsberg yeast No 1. Another specialized pure yeast production plant was installed at the Heineken Brewery in Rotterdam the following year and together they began

15006-833: Was the first held in over 20 years. In 2004, Theakston became inaugural title sponsor of the Old Peculier Crime Writing Festival and sponsors of the Theakston Old Peculier Crime Novel of the Year award. The Harrogate event is held in July and has welcomed John Grisham , Lee Child , Michael Connelly , PD James , Ruth Rendell , Colin Dexter , Reginald Hill , Val McDermid , Kathy Reichs , Jed Mercurio and Lynda La Plante . Brewery The diversity of size in breweries

15129-479: Was transferred to Scottish & Newcastle's Tyne Brewery. In 2003, Simon Theakston and three of his brothers purchased a majority shareholding back from Scottish & Newcastle. The company produces cask and bottled ales. Theakston cask ales are widely available in pubs in the north of England, though are less common in other parts of the country. The bottled beers are distributed to British supermarkets and exported. The company produces eight permanent beers and

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