KO Distilling Bare Knuckle High Rye Bourbon Cask Strength 6 YearBare Knuckle High Rye Bourbon is made with 75% corn, 21% rye, and 4% malted barley. It is double distilled and has been aged in charred new American White Oak barrels for 6 years. ABV: Varies Around 125 proof Tasting Notes Bare Knuckle High Rye Bourbon has notes of kettle corn, hot chocolate, toasted marshmallow, and caramelized sugars with airy vanilla combining like crme brle. A hint of dried cherry adds a fruity contrast to rye spice on the finish.