Tin Cup American Whiskey is the newest expression produced by Jess Graber. The whiskey is crafted from a mash of 64% corn, 32% rye and 4% malted barley. After distillation through copper-pot stills, the whiskey is matured in new, charred white oak barrels for four to five years. Then, the whiskey is shipped to Colorado, where it is brought to proof with Rocky Mountain snowmelt.