Following on the heels of Blackbird Imperial Blackberry Sour at 9.2% ABV a magnificent sour, they are following up with two barrel aged Imperial Raspberry Sours, one white wine barrel aged and the other, red wine barrel aged named Tantalus-10% ABV!
I just sampled both of these today at On Rotation and they are both excellent! Hail to the King of the Sours!