Bardstown Bourbon Company Maturate - Bardstown Bourbon Company’s Maturate is a 100 proof Kentucky Straight Bourbon Whiskey aged for 3 years. Maturate contains a mash bill of 60% corn, 36% rye and 4% malted barely. The Bardstown Bourbon Company is creating a modern, authentic bourbon experience, pushing boundaries through innovation while at the same time honoring the traditional art of whiskey making.