Mince pie and preserve for a gourmet (7)
I believe the answer is:
epicure
'for a gourmet' is the definition.
('epicure' can be a synonym of 'gourmet')
'mince pie and preserve' is the wordplay.
'mince' indicates an anagram.
'and' is a charade indicator (letters next to each other).
'preserve' becomes 'cure' (curing is a kind of preserving).
'pie' anagrammed gives 'epi'.
'epi'+'cure'='EPICURE'
(Other definitions for epicure that I've seen before include "Fine food expert" , "Lover of good food and drink" , "One enjoying good food and drink" , "I eat well" , "Person with fastidious tase in food and wine" .)