Beer is produced through the fermentation of sugars derived from cereal grains—primarily malted barley—using water and yeast, with the addition of hops, which serve as a bittering agent, provide aroma, and act as a natural preservative. It falls into two broad categories: Lager (clean and crisp) and Ale (more complex in flavor). Further subclassifications include Stout, Pilsner, and Wheat Beer.
