South American greeting for an Asian dish (5)
I believe the answer is:
sushi
'an asian dish' is the definition.
(I've seen this before)
'south american greeting' is the wordplay.
'south' becomes 'S' (abbreviation).
'american' becomes 'us' (abbreviation for United States).
'greeting' becomes 'hi' (hi is a kind of greeting).
's'+'us'+'hi'='SUSHI'
'for' acts as a link.
(Other definitions for sushi that I've seen before include "Exotic food" , "Japanese rice and raw fish dish" , "Oriental food" , "Rice and raw fish wrapped in seaweed" , "Food from Japan" .)