Stone Brewing Co., in continuing to lead the craft industry in over the top, and unique brews, has always wowed the consumer with its "odd-year releases." In 2011, it released Old Guardian BELGO Barleywine and BELGO Anise Russian Imperial Stout. In 2015, it released Chai-spiced Russian Imperial Stout. Awesome beers, but let's focus on the 2013 gem, Espresso Russian Imperial Stout.
American sour beer may very well be the fastest growing segment in the craft beer renaissance. Any brewery that is worth its weight in wort and wishes to remain relevant has a sour program.