Brother that is after food (4)
I believe the answer is:
brie
'food' is the definition.
(Brie is an example)
'brother that is after' is the wordplay.
'brother' becomes 'br' (abbreviation in titles of monks).
'that is' becomes 'ie' (short for Latin 'id est', 'that is').
'after' is a charade indicator (letters next to each other).
'br'+'ie'='BRIE'
(Other definitions for brie that I've seen before include "dairy product" , "Soft, creamy French cheese" , "Round soft Fr. cheese" , "French produce" , "Bergamot-flavoured tea" .)