Rossville Union Barrel Proof Straight Rye WhiskeyIndiana's MGP (or Midwest Grain Producers) have been the man behind the curtain for many a whiskey label over the last couple decades, fueling the whiskey boom with the actual juice to fill bottles with. When folks want to start a whiskey brand and can't actually manage to distill and age the stuff themselves, they often turn to MGP, who have proven to not just be a giant industrial behemoth of production, but legitimate masters of the craft as well,