Brewing is the process of making beer. It is usually made in a brewery, though it can be made at home. It is made by adding bacteria that ferment malt, barley or sugar into a large vat. Ethanol is produced by bacteria using up the energy from the mixture (which the bacteria digest into glucose) because there is no oxygen in the vat.
References[change | change source]
- "Brewing - Google Books". books.google.co.uk. Retrieved 2011-01-21.