Rod and Hammer's Slo Stills Big Jim's Old Fashioned 70 Proof is a 750 ml bottle of whiskey. It is made with a blend of corn, rye, and barley malt, and is aged for at least two years in charred oak barrels. The whiskey has a smooth, sweet flavor with notes of caramel, vanilla, and oak. It is bottled at 70 proof, making it a great choice for sipping neat or on the rocks.