Opening the wine (4)
I believe the answer is:
port
This clue is a double definition.
'opening' is the first definition.
(port is a kind of opening)
'the wine' is the second definition.
(port is a kind of wine)
(Other definitions for port that I've seen before include "Drink passed to the left" , "Stanley perhaps" , "Rio, perhaps" , "Popular after dinner liqueur" , "'Any . . . . In a storm'" .)