Den Ouden Advocaat is a Belgian beer brand associated with Brouwerij Boelens, a brewery based in the Flanders region of Belgium. While detailed historical records from the available sources are limited, the brand appears as part of a broader portfolio connected to Boelens, a regional brewery with roots in the Belgian craft and traditional brewing landscape. The brand is known for at least one notable beer: Boerken, a Strong Ale with an ABV of 9.5%. This style is characteristic of Belgian brewing tradition, where robust, high-alcohol ales with complex malt profiles and rich fermentation character are well established. The name Den Ouden Advocaat and its associated beer Boerken suggest a playful, regional identity rooted in Flemish culture and local brewing heritage. Based on available sources, Den Ouden Advocaat appears in regional contexts alongside Brouwerij Boelens and local Flemish specialty products. Further details about awards, taproom facilities or a broader beer range are not confirmed by the available search results.