I have recently taken up homebrewing as a hobby. I make small batches of beer for personal enjoyment, not for sale. 
Oh interesting. What ingredients does homebrewing use?
stabilizing agent. Other flavouring agents such as gruit, herbs, or fruits may be included or used instead of hops. In commercial brewing, the natural carbonation effect is often removed during processing and replaced with forced carbonation.
Some of humanity's earliest known writings refer to the production and distribution of beer: the Code of Hammurabi included laws regulating beer and beer parlours, and "The Hymn to Ninkasi", a prayer to the Mesopotamian goddess of beer, served as both a prayer and as a method of remembering the
styles, as different countries and organisations have different sets of criteria. Organisers of beer competitions such as the Campaign for Real Ale's (CAMRA) Champion Beer of Britain, the Beer Judge Certification Program (BJCP) local homebrewing competitions, the Brewers Association's World Beer Cup, and the Brewing Industry International Awards have categories in which beers are judged. The categories are varied and include processes or ingredients not usually regarded as defining beer styles in themselves, such as "Cask Conditioned Ale" (cask ale) for the Brewing