You mean marshmelons? ;-)
come on ozz, you vulcans always get thatone wrong
edit: when i saw startrek V first (german dub) where he says something like marschmelonen i thought 'and yet another example of shitty dubbing'
From Memory Alpha, re: the STV Novel
Spock roasting "marsh melons" at the start of the film was explained in the novel as being an elaborate prank by Dr. McCoy to reprogram the library computer database with a story that marsh melons were grown on trees in Georgia and that McCoy's own family had been famous marsh melon planters.
At the end of the novel, during the second campout at the end of the film, Spock discovered the deception and McCoy admitted he had hired a computer programmer to tap into the database and plant the false marsh melon story.