Quadruple distilled. From American grain. Since 1856. Distilled from grain. 40% alc/vol (80 proof). Selected and bottled by McCormick Distilling Co., Weston, MO. Mccormick 80 Proof Quadruple distilled. From American grain. Since 1856. Distilled from grain. 40% alc/vol (80 proof). Selected and bottled by McCormick Distilling Co., Weston, MO.