Gourmet cooked pie to preserve (7)
I believe the answer is:
epicure
'gourmet' is the definition.
(I know that gourmet can be written as epicure)
'cooked pie to preserve' is the wordplay.
'cooked' indicates anagramming the letters (letters cooked into a new form).
'to preserve' becomes 'cure' (curing is a kind of preserving).
'pie' is an anagram of 'epi'.
'epi'+'cure'='EPICURE'
(Other definitions for epicure that I've seen before include "Liker of fine food/drink" , "I eat well" , "A faddist in food and drink" , "Lover of fine eating" , "Person with fastidious tase in food and wine" .)