Tortellini was a type of food, a pasta made by Humans. In 2271, Nyota Uhura, Pavel Chekov and Hikaru Sulu, who were being hunted by assassins, stowed away aboard the partially-disassembled USS Enterprise and tried to coax edible food out of an unfinished food synthesizer. It made them a plate of tortellini, although in place of the normal tomato sauce, the confused machine provided the dish covered with tomato ketchup instead. (TOS novel: Traitor Winds)