Flying Buffalo Bourbon Barrel Aged Churro is a Russian imperial Stout by style. This Big Bourbon Barrel Aged Flying Flying Buffalo Imperial Stout goes through a Churro-ing process immediately after aging with equal parts vanilla and cinnamon bringing flavors reminiscent of this sweet & doughy treat. This craft beer is 12% ABV. In this craft beer review, we will take a look at the color, smell, and taste.