Bardstown Bourbon Company Discovery Series #5 – a blend of straight bourbon whiskies. Discovery Series #5 is a blend of 31% 13-Year Kentucky Whiskey, 25% 17-Year Tennessee Whiskey, 25% Kentucky Whiskey aged 7-Year and 19% Kentucky Whiskey aged 6-Year. This blend is bottled at 52.35% ABV at Cask Strength.