Klein Duimpje Bairs IV is a barrel-aged Imperial Russian Stout from Brouwerij Klein Duimpje in Hillegom, matured in whiskey casks. At 13% ABV, this is an intense and challenging beer. The brewery, established in 1994, brews according to traditional methods using high-quality ingredients.

This cask-aged stout merges the deep, roasted character of an Imperial Stout with woody complexity from maturation. The beer reveals layers of flavour as it warms in the glass.