Historic brewing region

Flanders

Northern Belgium, home of the aged and blended red-brown sour ales of West and East Flanders.

Why it matters to beer

Flemish red ale is matured for a year or more in large oak foeders, developing acetic and lactic acidity plus oak character, then blended with young beer to control the final acidity. The technique is closer to sherry production than to conventional brewing.

Styles from here

Flanders red ale
A deep red sour ale matured for years in oak foeders, balancing sharp acidity against dark fruit and a vinous depth.
Oud Bruin
An East Flanders aged brown ale, maltier and less sharply acidic than Flanders red, with raisin and caramel depth.

Beers brewed here

Liefmans Goudenband
The reference East Flanders brown ale — a blend of aged and young beer, sweet-and-sour rather than sharp.
Rodenbach Classic
The everyday Flanders red: a blend of young beer and foeder-aged beer, with the young beer dominant.
Rodenbach Grand Cru
A blend weighted heavily toward foeder-aged beer, and the reference example of Flanders red — sour cherry, balsamic and oak.
St. Bernardus Abt 12
A Watou quadrupel from the brewery that produced the Westvleteren beers commercially for decades.
St. Bernardus Tripel
A tripel from the brewery that spent decades producing Westvleteren’s beer under licence, brewed with the same yeast lineage.
Westvleteren 12
A Trappist quadrupel sold only at the abbey gate, and the clearest example of production deliberately capped rather than grown.

Breweries

Brouwerij St. Bernardus · Brouwerij Westvleteren · Liefmans · Rodenbach

Elsewhere in the country

Pajottenland · Wallonia

Last reviewed 2026-08-15.