Beer style beer differently. Since sugars are converted to alcohol during the process of fermentation, gravity can be used to estimate the final alcohol. In beer brewing, a distinction is made between the "original gravity", the gravity of the wort before fermentation has begun, and the "final gravity" of the product when fermentation has completed. Since the concentration of sugars is directly proportional to the gravity, the original gravity gives a brewer an idea of the potential alcoholic strength of the final product. After fermentation, the differences between the final and original gravities indicates the amount of sugar converted into alcohol, allowing
G. Heileman Brewing Company Heileman that same year. Throughout the 1930s, the company continued to expand their facilities to accommodate increased production needs. There was a major upgrade in the mid 1930s following the creation of Special Export, Heileman's second house brew. Whereas Old Style Lager was only around 4% alcohol, Special Export was over 6%. There was a brief slowing in production during World War II, when the company was impacted by the rationing going on in the country. It was also during WWII, the company took a different approach to brewing and marketing. Heileman began producing several new labels, none of which