Description from www.kentuckyale.com:
Kentucky Bourbon Barrel Ale™
With a little creative curiosity, we used spent bourbon casks, fresh from decanting, and filled them with our very own Kentucky Ale. From barrels that once held the finest bourbons of Kentucky, we present Kentucky Bourbon Barrel Ale, a smooth, golden elixir unlike any other. Subtle yet familiar flavors of vanilla and oak are imparted to this special ale as it rests in the charred barrel. We attribute this to what the bourbon maker calls the “angel’s share”. Elegantly smooth and modestly carbonated, Kentucky Bourbon Barrel Ale is a fine sipping ale with the distinctive nose of a well-crafted Kentucky bourbon.