Oud bruin is a traditional Belgian beer style known for its dark color and complex flavors. It is typically brewed using a blend of malted barley and sometimes other grains, which contribute to its rich, caramel-like sweetness. The fermentation process often involves wild yeast and bacteria, giving it a unique sourness that balances the sweetness. This beer is usually aged in wooden casks, which adds depth and character. Flanders red ale is a closely related style, sharing similar brewing techniques and flavor profiles. Oud bruin is often enjoyed with food, as its flavors complement a variety of dishes.