WhistlePig Boss Hog XI The Juggernaut Straight Rye Whiskey is a whiskey that is hand-bottled on the Whistlepig Farm and aged in new American oak barrels, then finished in Thandai barrels. It is part of the Boss Hog series, which is known for being refined Canadian rye whiskeys that are finished in Vermont. These whiskeys are rare and beloved by collectors, and are also considered expensive.