Single-barrel Tennessee whisky from Cascade Hollow Distilling in Tullahoma, Tennessee. What separates Tennessee whisky from bourbon is the Lincoln County Processfiltering through sugar maple charcoal before aging, a step that adds subtle vanilla and smoothness. This 9-year expression is bottled at cask strength (51.5% ABV) from individual barrels, meaning each one is unique. George Dickel notably spells ‘whisky’ without the ‘e,’ following the Scottish traditiona nod to founder George A. Dickel’s belief that his product was as smooth as the finest Scotch.