Good Japanese drink (4)
I believe the answer is:
sake
I believe this clue is a double definition.
'good' is the first definition.
(sake is a kind of good)
'japanese drink' is the second definition.
(I've seen this before)
(Other definitions for sake that I've seen before include "Benefit - behalf" , "Jap. alcoholic drink from rice; for Pete's -" , "Japanese alcoholic drink made from rice" , "Japanese rice wine" , "alcoholic drink out East" .)