WhistlePig Piggyback 6 Year Old Single Barrel Rye - We believe anything worth doing is worth doing 100%. Distilled from 100% Rye, PiggyBack is an uninhibited tribute to the grain, bringing 100% of its signature style with big, bold spice notes. It ages in American Oak Barrels for no less than 6 years before finishing its journey as a limited edition Single Barrel – straight to the bottle. No two are alike, so enjoy, mix and share accordingly.