Pabst Blue Ribbon (PBR) is an American brand of beer sold by Pabst Brewing Company, originally established in Milwaukee, Wisconsin, in 1844, but now based in Los Angeles. Pabst Blue Ribbon is contract-brewed in six different breweries around the U.S. in facilities owned by Miller Brewing Company (a few of which were actually Pabst breweries at one time). - Source: Wikipedia
