Barrel Craft Spirits Barrel Vantage Cask Strength is a small-batch, cask-strength whiskey made from a blend of corn, rye, and malted barley. It is aged in charred American oak barrels for a minimum of two years and bottled at 114.44 proof. The whiskey has a deep amber color and a complex flavor profile of oak, caramel, and spice. The finish is long and smooth, with a hint of sweetness. Barrel Vantage Cask Strength is a great choice for sipping neat or in a classic whiskey cocktail.