Johnny Drum Private Stock Kentucky Straight Bourbon Whiskey is the premium offering from the Johnny Drum range. Bottled at 101 proof, this big bold bourbon is a terrific rich, mellow old-school sour mash bourbon produced in very limited quantities to a method unchanged in five generations of quality distilling. A cask strength bourbon, this is the flagship bourbon from the Johnny Drum range of handmade bourbons, produced in small batches.