The following brews were aged in six different barrel formats creating 10 distinctive component pieces that were blended together. Portions of these beers were also fermented in the Firestone Union oak barrel brewing system. Abacus (5 barrel varieties), Parabola (2 barrel varieties), Ruby (2 barrel varieties), Bravo (2 barrel varieties), Walker’s Reserve, Humboldt Hemp Ale, 100% oak barrel fermented Double Barrel Ale.