Rabbit Hole Bourbon CavehillRabbit Hole's signature four grain Kentucky Straight Bourbon Whiskey is a homage to generations of proud Louisville distillers. Distinct and unorthodox, this expression builds on the legacy of these great bourbon pioneers and sets a new standard for American whiskey. Specs: 95 Proof 47. 5% ABV Mash Bill: 70% Corn 10% Malted Wheat 10% Honey Malted Barley 10% Malted Barley