The main beverage traditionally served during Oktoberfest celebrations is beer, specifically lager brewed according to German purity laws. It is served in large, one-liter mugs known as mass. Oktoberfest is renowned for its rich beer culture, with several breweries participating in the event to showcase their unique offerings. People gather in large tents to enjoy this beverage accompanied by delicious traditional foods, creating a lively social atmosphere. The tradition celebrates Bavarian heritage, making it a significant event for both locals and visitors indulging in the festive spirit.