Beer is actually a collective name for everything that is fermented from grain into an alcoholic drink. In addition to grain, you need water, yeast and hops to actually brew beer. Due to the variations with these 4 ingredients you can create an incredible number of different types of beer. It is special to see that after approximately 6,000 years of brewing history, people are still able to develop new beer styles! A well-known example is the New England IPA.
View all beer styles here.