Barterhouse 20 year comes from old barrels that had been stored in the Old Stitzel Weller Distillery and were sourced by Diageo. The mash bill is 86% corn, 8% malted barley, and 6% rye. Barterhouse 20 year bourbon is bottled at 90.2 proof. Tasting notes include warm biscuits and buttercream, with spice and brown sugar in the finish.