Most whiskey makers stick to the minimum 51% Rye. WhistlePig committed to long aging and countless barrel experiments that have led to the first 100% Rye perfected for sipping and mixing. Rye aged for six years taught WP that it doesn't take long to arrive at perfection. With a mash bill of 100% Rye to capture a 100% bold, spice flavor profile. PiggyBack's unique strength of precisely 96.56 proof is the optimal match in the strength-sweet-bitter cocktail triangle.