Single Barrel Aged Stout As one of our all-time favorite bourbons, we’ve been waiting patiently for this barrel to mature. 9 year old bourbon barrels are right in the sweet spot of imparting flavor from both spirit and oak. They both come together beautifully in this beer, which features elevated levels of wheat for an even softer body. Tasting notes: Rum Raisin Cake, Chocolate Covered Espresso and French Vanilla Ice Cream.