Brewing cylindroconical vessels, through open stone vessels, to wooden vats. After the wort is cooled and aerated – usually with sterile air – yeast is added to it, and it begins to ferment. It is during this stage that sugars won from the malt are converted into alcohol and carbon dioxide, and the product can be called beer for the first time. Most breweries today use cylindroconical vessels, or CCVs, which have a conical bottom and a cylindrical top. The cone's aperture is typically around 60°, an angle that will allow the yeast to flow towards the cone's apex, but is
G. Heileman Brewing Company Brewing Company declared bankruptcy in January 1991. The troubled firm sought salvation with an aggressive push into the malt liquor market. In a controversial move, company leadership developed a new brand of malt liquor to be named "Power Master". "Power Master" brand of malt liquor was brewed with an alcohol by volume of 7.4%, significantly higher than existing malt liquor brands. Protestors cited Heileman's distribution and advertising strategies as evidence that the company was targeting the high-alcohol beverage toward urban African-Americans, especially in Chicago, one of Heileman's core markets. Fr. Michael Pfleger took a leading role in opposing Power Master,