Carrot

Carrots are a common vegetable found on Earth.

Melanie Bush often tried to get the Doctor to drink carrot juice as part of his diet. (DW: Terror of the Vervoids, The Ultimate Foe)

Soon after his regeneration, the Doctor found himself craving food and had young Amelia Pond produce different types of foods, most of which he rejected after tasting. He so despised carrots that he rejected them out of hand, without even tasting them. (DW: The Eleventh Hour)

Andy Stone in 2059 was the first of the Bowie Base One colonists to become infected by a mysterious life form, most likely through consuming a carrot washed with the base's contaminated Martian water supply. (DW: The Waters of Mars)