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Flanders red & oud bruin
Also called Flanders red ale, Flemish red, Oud bruin, Flanders brown ale, Vlaams rood
Flanders red ale is a sour, wine-like Belgian ale of 4.6 to 6.5% ABV, aged in large oak foeders, with cherry, plum and balsamic notes and a tart finish. Oud bruin is its maltier, brown East Flanders cousin.
| Origin | Roeselare (West Flanders) and Oudenaarde (East Flanders), Belgium |
|---|---|
| Alcohol (ABV) | 4.6–8% |
| Bitterness (IBU) | 10–25 |
| Color | Deep red to reddish brown |
| Glass | Tulip or wine glass |
| Serving temperature | 8–12 °C |
| Classic examples | Rodenbach Grand Cru, Rodenbach Classic, Duchesse de Bourgogne, Cuvée des Jacobins Rouge, Liefmans Goudenband, Petrus Oud Bruin |
History
Flanders red ale is the indigenous beer of West Flanders, typified by Rodenbach, founded in Roeselare in 1821. In the late 19th century Eugene Rodenbach brought back from England the practice of aging beer in large wooden vats and blending old and young beer, borrowed from English porter brewing. Rodenbach still ages its beer in nearly 300 oak foeders. Oud bruin comes from East Flanders around Oudenaarde, where Liefmans has roots in the 1600s. The beer writer Michael Jackson first separated the two into distinct styles.
Appearance, aroma and taste
Flanders red is deep red to reddish brown and clear, with a modest off-white head. The aroma is fruity and complex: black cherry, plum, red currant and raisin, with vanilla or oak and a sharp, vinous acidity. The palate is tart, sometimes with a light acetic, balsamic tang, balanced by malt sweetness, and often compared to red Burgundy wine. Bitterness is low. Oud bruin is darker and maltier, with caramel, toffee and dried fruit and a gentler, lactic sourness without acetic notes.
How it is brewed
The grist combines Vienna and Munich malts with some caramel malt and corn, giving a reddish color. After a primary fermentation with ale yeast, the beer matures for 18 months to two years in large oak tuns (foeders), where lactic acid bacteria, Brettanomyces and acetic acid bacteria create sourness and complexity. The aged beer is then blended with younger beer for balance. Rodenbach Classic blends about one quarter aged beer, while Rodenbach Grand Cru contains about two thirds. Oud bruin usually ages in stainless steel rather than wood.
Food pairing
The fruit and acidity of Flanders red suit dishes that would take red wine: beef stew (stoofvlees), duck breast with cherry sauce, venison, pâté, charcuterie and roast pork. Belgian cooks use it in sauces and for braising rabbit. Oud bruin pairs with beef stew, sausages and liver. Strong cheeses such as aged Gouda, Roquefort and Brie, and desserts with dark fruit or chocolate, also work well.
Flanders red & oud bruin beers on the map (3)
BeerGuessr lists 3 brands whose flagship is a flanders red & oud bruin, all from Belgium. Their strength ranges from 5.2% to 6.2% ABV.
Flanders red & oud bruin: questions and answers
Why is Flanders red ale sour?
After primary fermentation, the beer ages for up to two years in oak vats containing lactic acid bacteria, Brettanomyces yeast and acetic acid bacteria. These microbes produce lactic and acetic acid, giving its tart, wine-like character.
What is the difference between Flanders red and oud bruin?
Flanders red, from West Flanders, is aged in oak, redder, and more acidic with a vinegar-like tang. Oud bruin, from East Flanders, is browner and maltier, with caramel and dried-fruit flavors and a softer lactic sourness, usually without oak aging.
Is Duchesse de Bourgogne a Flanders red?
Yes. Duchesse de Bourgogne, brewed by Brouwerij Verhaeghe in Vichte, is a classic Flanders red ale of 6.2% ABV, blending eight- and 18-month oak-aged beer. It is sweeter and softer than Rodenbach.
Related styles: sour beers
All beer styles →Sources: styles.bjcp.org, styles.bjcp.org, en.wikipedia.org
Last reviewed October 2026.