Since founding their brewery in 1996, Firestone Walker have specialized in the rare art of brewing beer in oak barrels. In the fall of 2006, they released a limited edition oak-aged strong ale called 10 to commemorate their 10th anniversary. The experience was greater than any one of them could have ever imagined. Firestone Walker now presents XX, their 11th release in what has become an annual autumn rite at their brewery.