Eggens crafts this imposing quadrupel in Groningen, maturing it for months in Islay whisky casks. The result is a dark, complex beer that has fully absorbed the smoky, peaty character of Scottish barrels. Expect deep notes of raisins, dark fruit and caramel, supported by a full, warming alcohol presence.

Cask aging adds layers of wood, peat and subtle whisky influence to the quadrupel's natural malt sweetness. This is a beer for contemplation—heavy, serious and full of character.