Large fruit mostly satisfied gastronome (7)
I believe the answer is:
gourmet
'gastronome' is the definition.
(I know that gastronome can be written as gourmet)
'large fruit mostly satisfied' is the wordplay.
'large fruit' becomes 'gourd' (I've seen this before).
'mostly' means to remove the last letter.
'satisfied' becomes 'met' (as in 'met the conditions of his contract').
'gourd' with its final letter removed is 'gour'.
'gour'+'met'='GOURMET'
(Other definitions for gourmet that I've seen before include "Food lover" , "Epicure" , "Connoisseur of fine food" , "One has a passion for fine food and wine" , "bon viveur" .)