Jack Daniel's Single Barrel Personal Collection Tennessee WhiskeyFor our Master Distiller and Master Tasters, picking out the perfect barrels for our Single Barrel whiskey is a very selective process. Just 1 out of approximately 100 barrels we produce is deemed worthy of the distinction. These barrels are found in the highest reaches of our barrel houses. That? s where extreme temperature variations dramatically increase the interaction between wood and whiskey, creating bold, robust flavors and notes of toasted