Question: The mint julep is a mixed alcoholic drink, or cocktail, consisting primarily of Bourbon whiskey, a whiskey of which nationality, a barrel-aged distilled spirit made primarily from corn?
Sentence (from "Willett Pot Still Reserve"): It is a Kentucky straight bourbon whiskey brand introduced in 2008 and bottled at 47% abv, with 8–10 year aging.
Relevant evidence: No