The Jack Daniel's Single Barrel Special Release series highlights an annual limited innovation from the Jack Daniel Distillery and this year's release is a twist on the original -- Heritage Barrel. Twice Barreled Heritage Barrel Rye is a celebration of the whiskey-making traditions of our distillery and the barrel-making expertise of our cooperage. The 2023 Jack Daniel's Special Release is a one-of-a-kind experience crafted from 70% rye, 18% corn, and 12% malted barley and twice barreled for a complex taste.