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
National Brewing Company two companies would result in a monopoly, denied the merger. Merely three years later, Carling-National was sold to G. Heileman Brewing Company of La Crosse, Wisconsin and the former brewing facility of Brewer's Hill was closed. Stroh Brewery Company of Detroit, Michigan later bought over the rights from Heileman in 1996. National Bohemian beer has not been brewed in Baltimore since. As of today, the brewery has been converted to business and office spaces as a part of the Brewers Hill redevelopment project by Obrecht Commercial Real Estate. National Bohemian, now only “National” in name, is brewed in North Carolina