Whistlepig Piggy Back Rye 6 Year 750 ml100% Rye 6 Yrs Aged 96. 56 Proof We think anything worth doing is worth doing 100% where most whiskey makers stick to the minimum 51% Rye, we are committed to long aging and countless barrel experiments that have led to the first 100% Rye perfected for sipping and mixing. Our Rye aged for six years taught us that it doesnt take long to arrive at perfection. With a mash bill of 100% Rye to capture a 100% bold, spice flavor profile. PiggyBacks unique