Accent on southern French wine (6)
I believe the answer is:
graves
'french wine' is the definition.
(left bank subregion of Bordeaux in France)
'accent on southern' is the wordplay.
'accent' becomes 'grave' (grave is a kind of accent).
'on' says to put letters next to each other.
'southern' becomes 's' (abbreviation).
'grave'+'s'='GRAVES'
(Other definitions for graves that I've seen before include "Burial places - French wine" , "Scots garment" , "Red or white wine" , "White wine - found in churchyard" , "Robert - - (war poet)" .)