Bratwurst is a sausage composed of pork, beef, or veal. It first appears in Bard Quest when the Bard attempts to buy 5 of them from the meat shop. He is then kicked out by the butcher who says "We don't stock dildos here! And besides, haven't you heard about the city ordinance on homosexuality??". Bratwurst then reappears two more times in Problem Sleuth, once for MPI: Succumb to unfathomable bratwurst and again when "You send your bratwurst-fingered fist bust-ward, obliterating it."
Although not specifically a bratwurst, a meaty sausage holds a prominent role in Hiveswap Friendsim, as the coveted favourite food of Diemen Xicali.