A diagram of a brewery. A brewery is a dedicated building for the making of beer, though beer can be made in the home, and has been for much of beer's history. A company which makes beer is called either a brewery or a brewing company. The diversity of size in breweries is matched by the diversity of processes, degrees of automation, and kinds of beer produced in breweries. Typically a brewery is divided into distinct sections, with each section reserved for one part of the brewing process.