Wild Turkey Master’s Keep Cornerstone is a very special Wild Turkey bottling. It is the distillery’s longest aged and highest proof rye ever released! Cornerstore is the fourth release in the limited-edition Master’s Keep series. The rye whiskey is a blend of 9-year-old and very rare 11-year-old barrels, bottled in August 2019 at 109 proof. Only 16000 bottles of Wild Turkey Master’s Keep Cornerstone Rye Whiskey have been released.