Devils River Barrel Strength Texas Bourbon Whiskey is the barrel strength, 117-proof entry in their lineup of whiskey. It’s Devils River bringing you bourbon the way it was drunk originally, just like the pioneers would have it uncut and straight from the barrel. Its mash bill of 75% corn, 21% rye, and 4% barley makes for a bold, yet smooth sipper. There’s pepper, rye, and oak on the nose, balanced by fruity and vanilla overtones, followed by sweet caramel, as well as more oak and spice on the palate. Expect a smooth and warm finish.