Tennessee whiskey is a label used for a specific type of whiskey produced in Tennessee that has to meet several quality and production standards. The production process is similar to bourbon, and the mash has to be made with 51% corn. After distillation, it has to go through a filtering step known as Lincoln County Process—which involves filtering or steeping whiskey in sugar maple charcoal.
The only exception to this rule is made for Prichard's whiskey. All Tennessee whiskey has to be aged in new, charred oak, but the exact aging period is not regulated. It is bottled at a minimum of 80 proof (40% alcohol by volume). Tennessee whiskey it typically amber-colored, and the charcoal-filtering provides for its signature smooth and mellow character.