Beer is an alcoholic beverage produced by the brewing and fermentation of starches from cereal grains—most commonly malted barley, although wheat, maize (corn), rice, and oats are also used. The fermentation of the starch sugars in the wort produces ethanol and carbonation in the beer. Beer is one of the oldest alcoholic drinks in the world, the most widely consumed, and the third most popular drink after water and tea. Most modern beer is brewed with hops, which add bitterness and other flavours and act as a natural preservative and stabilising agent. Other flavouring agents, such as gruit, herbs, or fruits, may be included or used instead of hops. In commercial brewing, natural carbonation is often replaced with forced carbonation.
Brewing is the production of beer by steeping a starch source in water and fermenting 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.
Low-alcohol beer is beer with little or no alcohol by volume that aims to reproduce the taste of beer while eliminating or reducing the inebriating effect, carbohydrates, and calories of regular alcoholic brews. Low-alcohol beers can come in different beer styles such as lagers, stouts, and ales. Low-alcohol beer is also known as light beer, non-alcoholic beer, small beer, small ale, or near-beer.
Homebrewing is the brewing of beer or other alcoholic beverages on a small scale for personal, non-commercial purposes. Supplies, such as kits and fermentation tanks, can be purchased locally at specialty stores or online. Beer was brewed domestically for thousands of years before its commercial production although its legality has varied according to local regulation. Homebrewing is closely related to the hobby of home distillation, the production of alcoholic spirits for personal consumption, but home distillation is generally more tightly regulated.
Sahti is a Finnish type of farmhouse ale made from malted and unmalted grains including barley and rye. Traditionally the beer is flavored with juniper in addition to, or instead of, hops; the mash is filtered through juniper twigs into a trough-shaped tun, called a kuurna in Finnish. Sahti is top-fermented and many have a banana flavor due to isoamyl acetate from the use of baking yeast, although ale yeast may also be used in fermenting.
In brewing and distilling, mashing is the process of combining a mix of ground grains – typically malted barley with supplementary grains such as corn, sorghum, rye, or wheat with water and then heating the mixture. Mashing allows the enzymes in the malt to break down the starch in the grain into sugars, typically maltose to create a malty liquid called wort.
Steam beer, also known as California common beer, is made by fermenting lager yeast at a higher than normal temperature.
In brewing, adjuncts are unmalted grains or grain products used in brewing beer which supplement the main mash ingredient. This is often done with the intention of cutting costs, but sometimes also to create an additional feature, such as better foam retention, flavours or nutritional value or additives. Both solid and liquid adjuncts are commonly used.
Beer in Norway has a long history, stretching back more than a millennium. Until some 200 years ago, most farms where it was possible to grow grain south of the Arctic Circle, brewed their own beer. From the early 20th century brewing was industrialized and home brewing was restricted. Significant consolidation in the brewing sector reduced the number of major breweries to just a handful. With the exception of the farmhouse ales, most beer styles brewed in Norway trace their ancestry to central Europe.
Allagash Brewing Company is a brewery in Portland, Maine. The brewery specializes in Belgian style beers.
Beer styles differentiate and categorise beers by colour, flavour, strength, ingredients, production method, recipe, history, or origin.
Sour mash is a process used in the distilling industry that uses material from an older batch of mash to adjust the acidity of a new mash. The term can also be used as the name of the type of mash used in such a process, and a bourbon made using this process can be referred to as a sour mash bourbon.
Wort is the liquid extracted from the mashing process during the brewing of beer or whisky. Wort contains the sugars, the most important being maltose and maltotriose, that will be fermented by the brewing yeast to produce alcohol. Wort also contains crucial amino acids to provide nitrogen to the yeast as well as more complex proteins contributing to beer head retention and flavour.
Lager is a type of beer brewed and conditioned at low temperature. Lagers can be pale, amber, or dark. Pale lager is the most widely consumed and commercially available style of beer. The term "lager" comes from the German word for "storage", as the beer was stored before drinking, traditionally in the same cool caves in which it was fermented.
Filtered beer refers to any ale, lager, or fermented malt beverage in which the sediment left over from the brewing process has been removed. Ancient techniques included the use of straw mats, cloth, or straws, and frequently left some sediment in the drink. Modern filtration, introduced at the end of the 19th century, uses a mechanical process that can remove all sediment, including yeast, from the beer. Such beer is known as bright beer and requires force carbonation before bottling or serving from a keg. In the United Kingdom, a beer which has been filtered in the brewery is known as "brewery-conditioned", as opposed to unfiltered cask ales.
Beer is produced through steeping a sugar source in water and then fermenting with yeast. Brewing has taken place since around the 6th millennium BC, and archeological evidence suggests that this technique was used in ancient Egypt. Descriptions of various beer recipes can be found in Sumerian writings, some of the oldest known writing of any sort. Brewing is done in a brewery by a brewer, and the brewing industry is part of most western economies. In 19th century Britain, technological discoveries and improvements such as Burtonisation and the Burton Union system significantly changed beer brewing.
Grodziskie is a historical beer style from Poland made from oak-smoked wheat malt with a clear, light golden color, high carbonation, low alcohol content, low to moderate levels of hop bitterness, and a strong smoke flavor and aroma. The taste is light and crisp, with primary flavors coming from the smoked malt, the high mineral content of the water, and the strain of yeast used to ferment it. It was nicknamed "Polish Champagne" because of its high carbonation levels and valued as a high-quality beer for special occasions.
A tower brewery is a distinct form of brewery, identified by its external buildings being arranged in the form of a vertical tower.
Porter is a style of beer that was developed in London, England, in the early 18th century. It is well-hopped and dark in appearance owing to the use of brown malt. The name is believed to have originated from its popularity with porters.
A beerfault or defect is a flavour deterioration caused by chemical changes of organic compounds in beer due to either improper production processes or improper storage. Chemicals that can cause flavour defects in beer are aldehydes, lipids, and sulfur compounds. Small fluctuations within fermentation byproducts can lead to the concentration of one or more of these chemicals falling outside a standard range, creating a flavour defect. It is also possible that during the malting process, microbial deterioration may occur, which leads to the loss of beer flavor.
