German brewing traditions are deeply rooted in history, with practices dating back to the Middle Ages. The country is known for its strict adherence to the Reinheitsgebot, or Beer Purity Law, established in 1516, which originally allowed only water, barley, and hops in beer production. This law has shaped the quality and consistency of German beers, leading to a wide variety of styles, including Pilsner, Weizenbier, and Dunkel. In addition to the purity law, regional brewing techniques and local ingredients contribute to the diversity of German beer. Each region has its own specialties, such as the Bavarian wheat beers and the rich, malty beers from Düsseldorf. Festivals like Oktoberfest celebrate these traditions, showcasing the cultural significance of beer in German society.