Japanese food coming with S American greeting (5)
I believe the answer is:
sushi
'japanese food' is the definition.
(sushi is a type of Japanese food)
'coming with s american greeting' is the wordplay.
'coming with' is a charade indicator (letters next to each other).
'american' becomes 'US' (United States).
'greeting' becomes 'hi' (hi is a kind of greeting).
's' next to 'us' is 'sus'.
'sus'+'hi'='SUSHI'
(Other definitions for sushi that I've seen before include "Fated" , "exotic dish" , "Oriental food" , "Asian food" , "Japanese rice and raw fish dish" .)