Crack open Yeti Imperial Stout’s sophisticated sibling — Oak Aged Yeti Imperial Stout. Although these beers come from the same clan, they have entirely different personalities. Aging on a blend of French and toasted oak chips infuses a subtle oak and vanilla character into Yeti’s already intense chocolate, roasted coffee malt flavor and hugely assertive hop profile. Who says you can’t tame a Yeti? 75 International Bittering Units (IBUs).