After pub fire, finish off wine (6)
I believe the answer is:
barsac
'wine' is the definition.
(type of wine)
'after pub fire finish off' is the wordplay.
'after' says to put letters next to each other.
'pub' becomes 'bar' (both are drinking establishments).
'fire' becomes 'sack' (dismiss someone from their job).
'finish off' means to remove the last letter.
'sack' with its final letter taken away is 'sac'.
'bar' put next to 'sac' is 'BARSAC'.
(Other definitions for barsac that I've seen before include "Sweet Bordeaux wine" , "18 [WINE]" , "French wine" , "Scarab (anag) - sweet white wine" , "some from France" .)