American reversing boat reduced fare from Japan (5)
I believe the answer is:
sushi
'fare from japan' is the definition.
(fare can mean food)
'american reversing boat reduced' is the wordplay.
'american' becomes 'US' (abbreviation for United States).
'reversing' says the letters should be written backwards.
'boat reduced' becomes 'shi' (I can't justify this - if you can you should give a lot more credence to this answer).
'us' reversed gives 'su'.
'su'+'shi'='SUSHI'
Can you help me to learn more?
(Other definitions for sushi that I've seen before include "Cold rice dish, often with raw fish" , "put away in Japan" , "Japanese cuisine" , "Japanese cold rice dish" , "Asian dish" .)