Duff Beer

Duff Beer is a fictional brand of beer from the animated sitcom The Simpsons that was brought to life for the consumer market. While North American availability is mostly restricted to Universal Studios theme parks, various versions have been brewed internationally. In the European market, particularly Germany, Duff Beer is a real product brewed according to the German Purity Law (Reinheitsgebot).

The brand originates from the United States as part of the intellectual property of The Simpsons. However, the physical product seen in European retailers is generally licensed and produced locally. In Germany, the brand is most notably associated with Duff Beer UG, which manages the distribution of the lager brewed by Privatbrauerei Eichbaum. Ownership of the fictional trademark remains with 20th Century Studios (a subsidiary of Disney), but the commercial beverage rights for specific territories like Germany have been the subject of various independent legal and licensing arrangements.