ATION O START? TRY A FLIGHT OF THESE FOUR SOUR FAVORITES. OSCAR AGED IN BLACKBERRY WHISKEY BARRELS A dark sour aged in blackberry-flavored whiskey barrels as part of the rare Wood Cellar Reserve series. The beer contains our treasured microflora – the oldest continuous souring culture in the country. CLUTCH Wood-aged tartness meets roasted, malty complexity. Brewed in collaboration with Maryland-based band Clutch, this darker-than-dark brew features fruity funkiness on a deep, heavy stout base.