Homer Simpson’s favorite brew has spawned a number of rogue spinoffs, leading to several legal battles over the trademark. Duff Beer is offered by German beermaker Eschweger Kloster­brauerei. Colombia-based Duff ­Sudamerica first marketed Duff Beer in 2009, then changed the name to DuH Beer after being sued by Fox. In August regulators ordered the company to cease production of DuH as well.