This faithfully reproduced bourbon was carefully aged for nine years and “Bottled in Bond” at 100 proof. The sour mashing technique for this small batch bourbon was derived from a meeting several years ago with some Buffalo Trace Distillery retirees who recounted a method for making old fashioned sour mash whiskey. The process replicated the way in which E.H. Taylor, Jr. made sour mash back in his day.