Flanders red ale

Flanders red ale
Country of origin Belgium
Yeast type Top-fermenting
Alcohol by volume 5.0% - 6.2%
Color (SRM) 10 - 16
Bitterness (IBU) 15 - 25
Original Gravity 1.046 - 1.054
Final Gravity 1.008 - 1.016
A Rodenbach Flemish red ale.

Flanders red ale is a style of sour ale brewed in West Flanders, Belgium.

Flanders red ale is fermented with organisms other than Saccharomyces cerevisiae, especially Lactobacillus, which produces a sour character attributable to lactic acid. Long periods of aging are employed, a year or more, often in oak barrels, to impart a lactic acid character to the beer.[1] Red malt is used to give the beer its colour and the matured beer is often blended with a younger batch before bottling to balance and round the character.

Flanders red ales have a strong fruit flavour similar to the aroma, but more intense. Plum, prune, raisin and raspberry are the most common flavours, followed by orange and some spiciness. The sour or acidic taste can range from moderate to strong. There is no hop bitterness, but tannins are common. Consequently, Flanders red ales are often described as the most wine-like of all beers.

Notable examples include Duchesse de Bourgogne, Rodenbach and VanderGhinste Oud Bruin.



  1. Bouckaert, Peter, "Belgian red ale" in Oliver, Garrett (ed.), The Oxford Companion to Beer (Oxford University Press, 2012), pp. 119 & 120.
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