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
Great Divide Brewing Company expand. In September 2008, Great Divide opened a new brewery that tripled its production. At the same time, they changed the art on all of their labels. The brewery's current branding is marked by sensationalized silhouette depictions of the region from which a particular beer originated (for instance, the sexualized female farmhand featured on the farmhouse ale Colette's label) and irreverent humor, as marked by the Imperial Stout Yeti's, "I believe." campaign. Great Divide Brewing Company was founded with the notion of brewing strong beers, which are defined as having an alcohol content greater than 7%. Six of the thirteen