Sushi bar mushroom (5)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
enoki
'sushi bar mushroom' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for enoki that I've seen before include "Japanese food" , "Oriental mushroom; E ikon (anag.)" , "Fare from the Far East" , "Japanese mushroom type" .)