Wild Duck Speyside No. 6 from Brouwerij In de Nacht in Weert is part of an adventurous series of cask-aged stouts. This beer spends 15 months maturing in Speyside whiskey barrels, developing a distinctive light sour edge. At 9.5% ABV, it merges the full, dark body of a stout with subtle whiskey character and refined acidity.

The extended maturation in whiskey casks builds layers and complexity into this stout. The result is a beer that stands apart through its balance between robustness and refinement, reflecting the brewery's commitment to experimental barrel-aging.