Yellowstone started in 1872 and Luxco eventually purchased the brand, but the brand’s quality started to decline. In 2015, Luxco purchased a 50% share in the young Limestone Branch Distillery in Lebanon, KY. Stephen and Paul Beam founded Limestone in 2010 but did not have enough mature bourbon for Yellowstone. They used up to seven sourced 7-year-old bourbons for Yellowstone, but by the end of the decade introduced Limestone’s own 4-year-old distillate into the blend. The sources and proportions are confidential, but Heaven Hill is a probable contributor based on their past relationship with Luxco. Yellowstone bourbon has a roasted chestnut appearance. The nose is brown sugar, caramel, licorice and some rye spice followed by toasted almonds and cinnamon. The taste is complex and reveals the diverse blend of bourbons that comprise the final product. Caramel, honey and butterscotch dominate with hints of toffee, orange and cinnamon. It trails with a medium fruity finish followed by oak and sugar.