California common, also known as steam beer, is made by brewing lager yeasts at warmer fermentation temperatures. This type of beer originated on the west coast of California in the United States during the late 1800s. According to the Anchor Brewing Company, one of the earliest breweries to make this style of beer, the name "steam beer" came from the fact that the brewery had no way to effectively chill the boiling wort using traditional means. So they pumped the hot wort up to large, shallow, open-top bins on the roof of the brewery, so that it would be rapidly chilled by the cool air blowing in from the Pacific Ocean. Thus, while brewing, the brewery had a distinct cloud of steam around the roof generated by the wort as it cooled.