Girl's not finished eating hot Japanese food (5)
I believe the answer is:
sushi
'japanese food' is the definition.
(sushi is a type of Japanese food)
'girl's not finished eating hot' is the wordplay.
I cannot quite understand how this works, but
'hot' could be 'h' (abbreviation eg on taps) and 'h' is found within the answer.
'girl' could be 'susi' and 'susi' is found in the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sushi that I've seen before include "Japanese rice and raw fish dish" , "Food from Japan" , "exotic dish" , "Rice, seafood cuisine" , "Japanese vinegared rice dish" .)