Cocktail past its sell by date? (3-9)
I believe the answer is:
old-fashioned
I believe this clue is a double definition.
'cocktail' is the first definition.
(I've seen this before)
'past its sell by date?' is the second definition.
(Other definitions for old-fashioned that I've seen before include "like those of yore?" , "Passe; whisky cocktail" , "square" , "Cocktail made with whiskey, bitters, sugar and fruit" , "Demode" .)