Lager (
German:
storage) is a type of
beer that is fermented and conditioned at low temperatures;
[1] it may be pale, golden, amber, or dark.
History of lager brewing[edit]
While cold storage of beer, "lagering", in caves for example, was a common practice throughout the medieval period, bottom-fermenting yeast seems to have emerged as a hybridization in the early fifteenth century. In 2011, a team of researchers claimed to have discovered that
Saccharomyces eubayanus is responsible for creating the hybrid yeast used to make lager.
[2][3]
Based on the numbers of breweries, lager brewing became the main form of brewing in Bohemia between 1860 and 1870, as shown in the following table:
[4]
| Year | Total
Breweries | Lager
Breweries |
|---|
| 1860 | 416 | 135 |
| 1865 | 540 | 459 |
| 1870 | 849 | 831 |
The rise of lager was entwined with the development of
refrigeration, as refrigeration made it possible to brew lager year-round (brewing in the summer had previously been banned in many locations across Germany), and efficient refrigeration also made it possible to brew lager in more places and keep it cold until serving.
[5] The first large-scale refrigerated lagering tanks were developed for Gabriel Sedelmayr's
Spaten Brewery in Munich by
Carl von Linde in 1870.
[5]
Variations[edit]
The average lager in worldwide production is a
pale lager in the
Dortmunder or
Pilsner styles. The flavor of these lighter lagers is usually mild, and the producers often recommend that the beers be served refrigerated. However, the examples of lager beers produced worldwide vary greatly in flavour, colour, and composition.
In colour,
Helles represents the lightest lager, rating as low as 6
EBC. Dark German lagers are often referred to as
Dunkel.
Production process[edit]
Lagers in certain countries often feature large proportions of
adjuncts, usually rice or maize. Adjuncts entered
United States brewing as a means of thinning out the body of U.S. beers, balancing the large quantities of protein introduced by six-row barley. Adjuncts are often used now in beermaking to introduce a large quantity of sugar, and thereby increase
ABV, at a lower price than a formulation using an all-malt grain bill. There are however cases in which adjunct usage actually increases the cost of manufacture.
[6]
Pale lager[edit]
This approach was picked up by other brewers, most notably
Josef Groll who produced in
Bohemia (today
Czech Republic) the first
Pilsner beer—
Pilsner Urquell. The resulting pale coloured, lean and stable beers were very successful and gradually spread around the globe to become the most common form of beer consumed in the world today.
[7]
The main elements of the lagering method used by Sedlmayr and Groll are still used today, and depend on a
slow acting yeast that
ferments at a low temperature while being stored. Indeed, the
German term '
Lager' means 'storage'. While first marketed as '
Lagerbier' in Austria and Germany, the term is now quite uncommon in the German-speaking countries where today one would simply ask for '
helles Bier' (pale lager), '
dunkles Bier' (dark lager) or specific varieties, particularly those with a distinctive character such as
Pilsner.
Vienna Lager[edit]
Distinctly amber colored Vienna lager was developed by brewer
Anton Dreher in
Vienna in 1841. Austrian brewers who emigrated to
Mexico in the late 19th century took the style with them. Vienna lager is a reddish-brown or copper-colored beer with medium body and slight
malt sweetness. The malt aroma and flavor may have a toasted character.
[8] Despite their name, Vienna lagers are generally uncommon in continental Europe today but can be found frequently in North America, where it is often called pre-
Prohibition style amber lager (often shortened to "pre-Prohibition lager"), as the style was popular in pre-1919 America.
[citation needed] Notable examples include
Great Lakes Eliot Ness,
Samuel Adams Boston Lager,
Devils Backbone Vienna Lager, Abita Amber, and
Yuengling Traditional Lager. In
Norway, the style has retained some of its former popularity, and is still brewed by most major breweries.
[citation needed]
Dark lager[edit]
Lagers would likely have been mainly dark until the 1840s; pale lagers were not common until the later part of the 19th century when technological advances made them easier to produce.
[9] Dark lagers typically range in colour from amber to dark reddish brown, and may be termed Vienna, amber lager, dunkel, tmavé, or schwarzbier depending on region, colour or brewing method.
Tmavé is Czech for "dark", so is the term for a dark beer in the Czech Republic - beers which are so dark as to be black are termed černé pivo, "black beer".
[10] Dunkel is German for "dark", so is the term for a dark beer in
Germany. With
alcohol concentrations of 4.5% to 6% by volume, dunkels are weaker than
Doppelbocks, another traditional dark Bavarian beer. Dunkels were the original style of the Bavarian villages and countryside.
[11] Schwarzbier, a much darker, almost black beer with a chocolate or liquorice-like flavour, similar to
stout, is mainly brewed in
Saxony and
Thuringia.
See also[edit]
References[edit]
- Jump up^ Briggs, D.E.; Boulton, C.A.; Brookes, P. A.; and Stevens, R. Brewing, 2004, CRC. ISBN 0-8493-2547-1 p. 5.
- Jump up^ "500 years ago, yeast's epic journey gave rise to lager beer". Geneticarchaeology.com. Retrieved 2014-04-08.
- Jump up^ "Microbe domestication and the identification of the wild genetic stock of lager-brewing yeast". Pnas.org. 2011-08-22. Retrieved 2014-04-08.
- Jump up^ Pasteur, Louis, Studies in Fermentation, 1879. English translation reprinted 2005 Beerbooks.com ISBN 0-9662084-2-0 p10. Citing Moniteur de la Brasserie, 23 April 1871.
- ^ Jump up to:a b James Burke (1979). "Eat, Drink, and Be Merry".Connections. Episode 8 (in English). 49 minutes in. BBC.
- Jump up^ Bamforth, Charles (2003). Beer: Tap into the Art and Science of Brewing, Second Edition. Oxford University Press, Inc. ISBN 0-19-515479-7.
- Jump up^ "LAGER BEER STYLES, European All-malt Pilsener". Beermonthclub.com. Retrieved 2014-04-08.
- Jump up^ Gregory J. Noonan, Mikel Redman and Scott Russell; Seven Barrel Brewery Brewers' Handbook; G.W. Kent, Inc;ISBN 1-887167-00-5 (paperback, 1996)
- Jump up^ "German Beer Guide: Dunkel". www.germanbeerguide.co.uk. Retrieved 2010-05-26.
- Jump up^ "Pražský Most u Valšů at Beer Culture". www.beerculture.org. Retrieved 2010-09-28.
- Jump up^ "Dunkel". German Beer Guide. 2004-08-01. Retrieved2012-08-14.
