Jefferson’s Presidential Select 21-Year-Old Straight Bourbon Whiskey is aged in new oak barrels for 21 to 24 years and bottled at 94 proof (47% ABV). “This is precious bourbon since there are very few bottles of this age with this complexity,” says Jefferson’s founder and master blender Trey Zoeller. “This limited release whiskey aged beautifully. Because of the nuanced flavor profile, this Jefferson’s Presidential Select Straight Bourbon Whiskey is sure to become one of our most coveted bottlings.” Jefferson’s Presidential Select 21-Year-Old Straight Bourbon Whiskey consists of 15 lots of bourbon aged from 21 to 24 years. Bourbon of this age is extremely fragile; Zoeller discovered that these stocks had aged undisturbed for many years in a cooler area of the warehouse, which added further nuance to the spirit’s flavor profile and engendered a later peak.