Oud Bruin
Country of Origin	Belgium
Original Gravity	1044-1056
Final Gravity	1008-1010
Bitterness IBU	15-25
Color (SRM)	12-18
Attenuation	60-70
Yeast type	Lager
Malt percentage	90-100
Alcohol by volume	4.8-5.2%
Serving Temperature	55-60°F
BJCP style #	None
This article forms part of a series on beers and breweries of the world.

Oud Bruin, also known as Flanders Brown, is a style of beer originating from the Flemish region of Belgium. The name literally translates as "old brown", referring to the long aging process which can take up to a year. It undergoes a secondary fermentation in an oak cask for several weeks to a month, followed by bottle aging for several more months. The oak aging allows the beer to pick up yeast and bacteria embedded in the oak from previous beers. The International Bitterness Units scale, or simply IBU scale, provides a measure of the bitterness of beer, which is provided by the hops used during brewing. ... Standard Reference Method or SRM is a system modern brewers use to measure color intensity or a beer. ... Attenuation is the decrease of the amount, force, magnitude, or value of something. ... Yeasts constitute a group of single-celled (unicellular) fungi, a few species of which are commonly used to leaven bread and ferment alcoholic beverages. ... Malted barley Malting is a process applied to cereal grains, in which the grains are made to germinate and then quickly dried before the plant develops. ... Alcohol by volume (ABV) is an indication of how much alcohol (expressed as a percentage) is included in an alcoholic beverage. ... The Beer Judge Certification Program or BJCP is a non-profit organization formed in 1985 to encourage the educational advancement of people interested in the evaluation of beer and related brewed products. Membership is limited to beer judges holding the rank of Recognized (or Apprentice; see below) and as of... A typical mug of lager beer, showing the golden colour of the beer and the foamy head floating on top. ... The entrance of a brewery. ... A typical mug of lager beer, showing the golden colour of the beer and the foamy head floating on top. ... Flemish (in Dutch, Vlaams) can either refer to Anything belonging to Flanders (the Flemish nation) or to its inhabitants, the Flemings. ... Yeasts constitute a group of single-celled (unicellular) fungi, a few species of which are commonly used to leaven bread and ferment alcoholic beverages. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria is also the fictional name of a warring nation under Benzino Napaloni as dictator, in the 1940 film The Great Dictator...

This style of beer is medium bodied, reddish-brown, and has a gentle malty flavor and no hop bitterness. The flavor is fruity, tart, and highly acidic, caused by various bacteria in the maturation process, similar to a lambic. Commercial versions may mix aged beer with younger beer to temper the acidity and create a more complex flavor. Traditional wooden Lambic barrels, the L on the barrel indicates the brewery. ...

Examples

• Liefmans Goudenband