Never heard of this brewery? That's ok. Neither did I until a friend handed me this bottle to sample. 
No expectations going into this one.
Look-like dark apple cider
Smell-the booze from the bourbon stings my nostrils. I also get a bit of something honey maybe.
Taste-First thing I taste is vanilla along with the taste of bourbon.
Mouth-Medium bodied. Sweet in the mouth from the malt. 
Overall-The taste is the hero in this beer which is disappointing since it got my hopes up.Once in my mouth, the flavors (outside of the vanilla) are a but muted...even tame. In the beer's defense, I drinking this a little colder than is ideal. I'll give an update when it warms.  UPDATE: Nothing much changed. It's a unique beer but not one I'd seek out again.
About Kentucky Bourbon Barrel Ale:
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.