Tasting Notes DIAMOND IN THE ROUGH ALERT...this new Bourbon World selection of Whistlepig Piggyback 100% rye bottled at 112.7 proof, distilled in Vermont and aged 6 years is a KNOCKOUT! Oily peppermint and graham cracker on the nose, fresh cut oak, grassy rye and a huge spice KICK! Load this thing up with ice and let it mellow down. I had it as an Old Fashioned and loved every spicy minute of that drink! Finally a spice level that rivals MGP''s 95/5 rye.