The Knob Creek 21 Year is a limited-edition, ultra-aged Kentucky Straight Bourbon Whiskey bottled at 100 proof (50% ABV), known for its deep flavors of charred oak, vanilla, and caramel, with notes of dark fruit, baking spice, and a long, warming finish. It is a rare release from the Jim Beam Distillery in Clermont, Kentucky, offering a complex, mature profile shaped by 21 years of aging in deeply charred American oak barrels.