Rhetoric 25 Year Old Kentucky Straight Bourbon Whiskey is the sixth and final in the Rhetoric Series of progressively aged whiskeys from the Orphan Barrel Whiskey Distilling Company. Diageo’s Orphan Barrel Whiskey Distilling Company is a series of bottles that came from barrels that were abandoned or forgotten at rickhouses and distilleries. Aged 6 years longer than the first release, it is slightly more mature and carries a 90.6 proof. The whiskey will continue to be progressively aged and were re-released annually at a year older.