California Common

What is California Common? California Common is a hybrid American beer style, widely known as Steam Beer, that is brewed with bottom-fermenting lager yeast at the warmer temperatures normally reserved for ales. The style emerged in 19th-century California during the Gold Rush era, when brewers on the West Coast lacked the cold cellars and ice needed for true lager fermentation and improvised with what they had. The result is a clear, medium amber to light copper beer that bridges two worlds, carrying both the crispness of a lager and the fruitiness of an ale. Anchor Brewing Company modernized and popularized the style in the 20th century and trademarked the name Steam Beer in 1981, which is why other commercial versions today are labeled California Common.

Origins and the Anchor Legacy

The style is rooted in the rough, improvisational brewing culture of the American West Coast during the second half of the 19th century. A 1902 brewing manual described it as a drink much consumed by the laboring classes, which captures its identity as an affordable, working-class beer for miners, dockworkers, and settlers. Historic recipes leaned on adjuncts such as malt, grits, raw cereals, and sugars, especially glucose, while modern interpretations are typically built from all-barley malt.

Anchor Brewing Company, whose lineage traces back to a San Francisco brewery operating since the 1890s, rescued the style from near-extinction and turned it into a defining example of American craft beer. Anchor secured the Steam Beer trademark in 1981, and although the company ceased operations in 2023, its influence on the style remains foundational. Other modern producers, such as Widmer Brothers with Columbia Common and Port City Brewing with Derecho Common, keep the tradition alive under the California Common name.

Style Profile and Flavor

By BJCP guidelines the style sits at 4.5 to 5.5 percent ABV, 30 to 45 IBU, and an SRM of 9 to 14, placing it firmly in the medium amber to light copper range with an off-white head that holds well. Original gravity runs from 1.048 to 1.054 and final gravity from 1.011 to 1.014, giving the beer a firm, grainy backbone rather than a heavy or sweet body. It is classified as style 19B in the BJCP 2015 guidelines and as 7B in the 2021 revision, grouped with amber bitter European and hybrid styles.

The flavor centers on a firm grainy maltiness with toasty and caramel notes, lifted by light fruitiness from the warm fermentation. Northern Brewer is the signature hop, giving the beer its distinctive woody, rustic, sometimes minty character in moderate to high intensity. The overall impression is balanced and assertive without being heavy, which makes California Common a versatile choice for drinkers exploring the middle ground between lagers and pale ales.