The Unique Flavors of Oud Bruin Ales

Oud Bruin, also known as Flanders Brown, is a sour dark that originated in the province of Limburg in the Netherlands and is still popular in the East Flanders city of Oudenaarde in Belgium. This style is renowned for its deep character and unique aging process that can take over a year to complete.

The term “oud” or “old” in Dutch, refers to the lagering or aging process that is used to create this beer. During this process, the beer is left to age in oak , which gives it a distinct flavor and aroma. The aging process also allows the beer to develop a deeper, more complex malt character, which sets it apat from other sour beers, such as Flemish Red Ale.

One of the key features of Oud Bruin is its sourness, which is imparted by the use of wild strains during the process. This gives the beer its tart, fruity flavor profile, which is balanced by its malty sweetness. The result is a beer that is both complex and refreshing, with a depth of flavor that is unmatched by other beer styles.

Oud Bruin is often served in smaller , such as tulip glasses, to enhance its aroma and flavor. It is also typically lower in content than other Belgian beer styles, making it a great choice for those who want to enjoy a flavorful, complex beer without getting too tipsy.

Oud Bruin is a unique beer style that is beloved by beer aficionados around the world. Its deep malt character, sourness, and fruity flavor profile make it a complex and refreshing beer that is perfect for sipping and savoring. Whether you're a seasoned beer drinker or just getting started, Oud Bruin is a beer that you won't want to miss.

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What Is An Oud Bruin Beer?

Oud Bruin beer is a blended sour dark ale style that originated from the province of Limburg in the Netherlands. This style is known for its tart and fruity flavor profile, which is achieved thrugh a lagering or aging process that can take over a year to complete. Oud Bruin, which translates to “old brown,” is still popular in the East Flanders city of Oudenaarde in Belgium. This beer style is typically brewed with a combination of roasted malts and aged to create its distinctive flavor. It is not uncommon for brewers to blend old and new batches of beer to achieve the desired taste. Oud Bruin is a unique beer style that is beloved by many beer enthusiasts for its complex and sour flavor profile.

What Is The Difference Between Flanders Red Ale And Oud Bruin?

Flanders Red Ale and Oud Bruin are both Belgian styles of beer that are known for their sourness and fruity flavors. However, there are some differences betwen the two.

Flanders Red Ale is known for its intense sourness, which comes from the use of wild yeast and bacteria in the brewing process. It has a tart, fruity flavor that is often compared to sour cherries or raspberries. Flanders Red Ale has a reddish-brown color and a dry finish.

On the other hand, Oud Bruin is a darker beer that has a more complex malt profile than Flanders Red Ale. It is aged for a longer period of time, which gives it a deeper, richer flavor. Oud Bruin is less sour than Flanders Red Ale, with a more pronounced maltiness and a hint of sweetness. It has a brown color and a smooth, velvety finish.

To summarize, Flanders Red Ale is more sour and fruity, while Oud Bruin is maltier and less tart.


Oud Bruin is a unique and complex beer style that has a rich history dating back to Limburg in the Netherlands. Today, it remains popular in the East Flanders city of Oudenaarde in Belgium. Unlike Flemish Red ale, Oud Bruin is less acetic and has a deeper malt character, with fruity flavors that are more malt-oriented. The aging process can take over a year to complete, and the resulting beer is a testament to the art of brewing and the importance of terroir. As a beer style, Oud Bruin is a must-try for any beer enthusiast looking to expand their palate and explore the rich diversity of beer flavors from aound the world.

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Thomas Ashford

Thomas Ashford is a highly educated brewer with years of experience in the industry. He has a Bachelor Degree in Chemistry and a Master Degree in Brewing Science. He is also BJCP Certified Beer Judge. Tom has worked hard to become one of the most experienced brewers in the industry. He has experience monitoring brewhouse and cellaring operations, coordinating brewhouse projects, and optimizing brewery operations for maximum efficiency. He is also familiar mixology and an experienced sommelier. Tom is an expert organizer of beer festivals, wine tastings, and brewery tours.