To create a barrel aged version of one of our most popular Stouts, we started by drastically increasing the gravity and boosting the flaked oats to maintain the creamy, velvety mouthfeel, even after its extended time in barrels. After aging in freshly emptied 6-12 year-old bourbon barrels for 19-21 months, we conditioned the beer on peanut flour, toasted marshmallows, marshmallow creme, and Vanuatu vanilla beans. It turns out the only combination better than peanut butter and marshmallow is peanut butter, marshmallow and bourbon.