The brewing fermentation stage is divided into the main Fermentation and post-fermentation, with a yeast recovery stage in between.

AlesAltbierAltbiers made in northern Germany are associated with the area around the city of Düsseldorf. Most altbiers are copper to brownish-amber in color, and light to medium in body, with a pronounced malt character that is not overpowering. Altbier lacks hop aroma but has medium to high bittern

Fermentation is an important process in beer production. The beer fermentation system consists of a fermentation tank, a sake tank, and a temporary storage tank. In the craft beer industry, the most used beer fermentation equipment is the cylindrical-conical bottom fermentation tank (conical tank fo