Duff Beer is a brand of beer that originally started as a fictional beverage on the animated series The Simpsons. Duff Beer is the most popular brand of beer in Springfield. It is Homer Simpson’s favorite drink, and is enthusiastically promoted by Duffman, the company mascot. In 2016, Time magazine included Duff Beer into the list of the most influential fictional companies of all time.
“Can’t Get Enough of That Wonderful Duff” — Duff Beer official slogan.