Steam beer is a unique style of beer that is known for its high effervescence and pressure, hence the name “steam beer.” This term was coined by authors Robert Wahl and Max Henius, who explained that the beer earned its name due to these distinct characteristics. The term “steam” refers to the pressure that builds up within the packages of this beer, creating a noticeable effervescence when opened.
The origins of steam beer can be traced back to the early days of brewing in America, particularly in California during the mid-19th century. At that time, refrigeration technology was not yet widely available, making it difficult to control fermentation temperatures. Brewers had to find alternative methods to cool the hot wort, which is the liquid extracted from malted grains that eventually becomes beer.
In the absence of refrigeration, brewers in California would ferment their beer in shallow vessels, such as open-air fermenters or shallow coolships. These vessels were typically placed on rooftops or near open windows, taking advantage of the cooler ambient temperatures in the evening and early morning. As a result, the hot wort would release steam during the fermentation process, giving rise to the name “steam beer.”
The term “steam” is not related to the use of actual steam in the brewing process. Instead, it refers to the visible vapor or steam-like appearance that would emanate from the fermenting vessels. This phenomenon occurred due to the warmer fermentation temperatures and the lack of proper cooling methods, resulting in the release of carbon dioxide and other volatile compounds.
The use of the term “steam beer” became popularized as this style of beer gained recognition and popularity in California. It became associated with the unique brewing methods and the effervescent nature of the beer. The term helped differentiate steam beer from other styles of beer and became a distinctive characteristic of this particular brewing tradition.
Today, steam beer is considered a historical style, closely associated with the brewing heritage of California. It is characterized by its amber color, medium body, and a crisp, slightly fruity flavor profile. While modern brewing techniques and refrigeration have made it possible to produce steam beer without the need for open fermentation vessels, the name “steam beer” continues to be used as a nod to its historical origins and the effervescence that is still present in this style of beer.
Steam beer is called steam beer because of the visible steam or vapor that was released during the fermentation process in the early days of brewing in California. The term was coined by authors Robert Wahl and Max Henius to describe the high effervescence and pressure present in the packages of this beer. Today, steam beer remains a unique style, reflecting the brewing heritage and traditions of California.