Long-stemmed mushroom (5)
I believe the answer is:
enoki
'long-stemmed mushroom' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for enoki that I've seen before include "Fare from the Far East" , "Japanese food" , "Oriental mushroom; E ikon (anag.)" , "Japanese mushroom type" .)