Liquid Death sells Mountain Water. WhistlePig makes whiskey. They've come together to create Gravestock Limited Edition Wheat Whiskey. This wheat and rye blend is aged in large 380-gallon charred American oak casks, then proofed with Liquid Death Mountain Water before being bottled at 86 proof. Subtle notes of vanilla, caramel, and toasted grains hit the nose after a pour, giving way to a mellow palate of honey, baked bread, and spice, with a clean, crisp finish that leaves behind just a hint of sweetness.