I opened this last Friday as a nice change of pace. Been drinking a lot of stouts and ipas and such, so I figured this would be different. The style of Boulevard Bourbon Barrel Quad is pretty self-explanatory as it's a quad base blended with a portion aged on cherries in a few different types of bourbon barrels. Some people thought it was infected (which can happen with barrel aging) as a result of the cherries, but after trying it those people are crazy. The tartness is very clearly a result of the cherry.