Something to eat before the family quiz (7)
I believe the answer is:
pumpkin
'something to eat' is the definition.
(pumpkin is a kind of food)
'before the family quiz' is the wordplay.
'before' is a charade indicator (letters next to each other).
'the family' becomes 'kin' ('kin' can be a synonym of 'family').
'quiz' becomes 'pump' (both can mean to interrogate).
'kin' after 'pump' is 'PUMPKIN'.
(Other definitions for pumpkin that I've seen before include "Huge yellowy fruit" , "Hallowe'en fruit" , "It's a Halloween tradition" , "Orange-yellow fruit" , "Large variety of squash" .)