A traditional Vulcan vegetable soup, best remembered as the bowl that Spock hurled out of his quarters at Nurse Chapel during the onset of his pon farr.
Plomeek soup is a staple of Vulcan cooking, a thick orange broth generally described by other species as bland. It is first seen in Amok Time, when Christine Chapel, worried that Spock has stopped eating, makes a bowl and takes it to his quarters.
Spock, in the grip of pon farr, throws the bowl against the corridor wall and shouts at her. He later apologises in his own fashion by asking whether she would make him another.
The dish recurs in later series. Aboard Voyager, Neelix serves Tuvok a spiced version that the Vulcan finds too lively, and on the NX-01 Enterprise the galley prepares it for T'Pol as a taste of home.