The main ingredients found in beer are water, malted barley, hops, and yeast. There are other ingredients such as flavoring, sugar, and other ingredients that are commonly used. Starches are used as well, as they convert in the mashing process to easily fermentable sugars that will help to increase the alcohol content of beer while adding body and flavor.
Water
Seeing as how beer is mainly composed of water, the source of water and its characteristics have a very important effect on the character of the beer. A lot of beer styles were influenced by the characteristics of water in the region. Although the effect of minerals in brewing water is complex, hard water is more suited to dark styles, while soft ware is more suited to light styles.
Malt
Among malts, barley is the most widely used due to its high amylase content, and a digestive enzyme that facilitates the breakdown of starch into sugars. Depending on what can be cultivated locally, other malts and unmalted grains can be used, such as wheat, rice, oats, and rye.
Malt is obtained by soaking grain in water, allowing it to germinate, then drying the germinated grain in a kiln. By malting...