South American welcome dish (5)
I believe the answer is:
sushi
'dish' is the definition.
(sushi is a kind of dish)
'south american welcome' is the wordplay.
'south american' becomes 'sus' (I've seen this in other clues).
'welcome' becomes 'hi' (I've seen this in other clues).
'sus'+'hi'='SUSHI'
(Other definitions for sushi that I've seen before include "Food from Japan" , "Cold rice dish, often with raw fish" , "exotic dish" , "oriental dish" , "Asian dish" .)