Introducing Hickory Hill 15 Year Kentucky Straight Bourbon Whiskey and 15 Year Kentucky Unfiltered Cask Strength Bourbon Whiskey: proof that nothing beats the magic of natural aging. Our new spirits were housed in barrels for 15 years, patiently waiting for all the congeners to develop into a water of life elixir. Prepare yourself for a luxurious bourbon that has been meticulously selected by an expert panel as a true gem.