The Kentucky Distillers’ Association (KDA) recently illuminated some of its most interesting inner workings, revealing that different levels of membership depend, in part, upon how many barrels are aging in a distillery’s warehouses. Recently, two distilleries reached the next levels of membership, moving up in the echelons of the trade group’s power brokers.

Two levels of membership, called “Heritage” and “Proof,” reflect at least 25,000 or 10,000 barrels, respectively, aging in an associated Kentucky distillery’s warehouses. Just seven of the current 28 members (including Beam Suntory, Brown Forman, Diageo North America, Four Roses, Heaven Hill Brands, and Wild Turkey) are part…