Brewing much studied, the preservative nature of the soft resins is not yet fully understood, though it has been observed that unless stored at a cool temperature, the preservative nature will decrease. Brewing is the sole major commercial use of hops. Yeast is the microorganism that is responsible for fermentation in beer. Yeast metabolises the sugars extracted from grains, which produces alcohol and carbon dioxide, and thereby turns wort into beer. In addition to fermenting the beer, yeast influences the character and flavour. The dominant types of yeast used to make beer are "Saccharomyces cerevisiae", known as ale yeast, and "Saccharomyces
Pearl Brewing Company San Antonio Brewing Association referred to all brewing in San Antonio in general. Therefore, in 1952 the San Antonio Brewing Association changed its name to the Pearl Brewing Company (1952–present). Pearl was successful, not only in Texas, but on a national level, as well. Larger companies saw this success and made many attempts to buy out Pearl and their beers. Almost all offers were never even considered. In what would turn out later to be ironic, one company came very close to buying out the Pearl Brewing Company in the 1950s: Pabst Brewing Company. B.B. McGimsey, who was Pearl's plant