Chattanooga Whiskey 91 is Bourbon Whiskey  made from a four-grain mash bill which in addition to yellow corn uses Bourbon Whiskey  three malted grains: rye malt, caramel malted barley, and honey Bourbon Whiskey  malted barley. The mash bill recipe was chosen by master Bourbon Whiskey  distiller Grant McCracken -- Barrel 91-- from the 100 barrels distilled at the brand's experimental distillery. Chattanooga Bourbon Whiskey  refers to this whiskey as a Tennessee High Malt, but technically Bourbon Whiskey  this is a straight bourbon. Matured for a minimum of two years in toasted and charred barrels and is finished in a charred 4000-gallon oak solera barrel.