Sushi bar drink (4)
I believe the answer is:
sake
'sushi bar drink' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sake that I've seen before include "alcoholic drink out East" , "Japanese rice alcohol" , "'Reason, purpose (4)'" , "Benefit - Japanese drink" , "Benefit - Japanese liquor" .)