To me, marang is all about being sweet, and raddishes are anything but, so no thanks!
I can think of some others:
pepper
peas
turnups?
cheese, (for Mokey's painting)
mention of chicken stew, (although it is questionable as to whether Gobo actually knows what it is)
grapes
gumdrops
buns
oranges, (peals were in the Trash Heap)
I get the feeling that there are others I was thinking of, but have now forgotten.
I think it would be an interesting idea, perhaps partly inspired by Doc's spirit, to just buy some raddishes from the store and experiment with them, Lol.