Kentucky Straight Bourbon Whiskey. Rebel Reserve is the big sibling to Rebel Yell, and it is (like Rebel Yell) distilled at Heaven Hill for the Luxco brand. Also like Rebel Yell, Rebel Reserve is a true wheated mash bill, filling in wheat instead of rye in the grain recipe. There is no age statement on Rebel Reserve, but I suspect it is about 6 years old, about 2 years older than Rebel Yell. Rebel Reserve is also bottled at 90.6 proof (45.3% abv), compared to Rebel Yell’s 80 proof.