Jack Daniel's Gentleman Jack is a Tennessee whiskey produced from a mash bill of 80% corn, 12% malted barley, and 8% rye. Aged in new charred American white oak barrels. Non-age statement. The spirit undergoes the Lincoln County Process (filtration through sugar maple charcoal before barreling) and a second charcoal filtration after aging. Bottled at 40% ABV. Standard bottle sizes are 750ml or 1 liter depending on market.