Jack Daniel’s Single Barrel 2021 Special Release Coy Hill High Proof. This year’s annual special release celebrates Coy Hill which is the highest-elevated rolling hill on the Jack Daniel Distillery property. This rare high-proof release honors the art of the whiskey-making process, as well as showcases how a barrel house location along with the extreme weather and maturation conditions produces an exceptional whiskey flavor. The Coy Hill High Proof is bottled in its purest form straight from the barrel, with minimal filtration, uncut at 137.4 - 148.3 proof. This one-of-kind Jack Daniel’s Single Barrel bottle should remain upright at all times unless you are pouring it into a glass to enjoy.