Bread from bakery eaten (3)
I believe the answer is:
rye
'bread' is the definition.
(rye bread is a kind of bread)
'from bakery eaten' is the wordplay.
'from' says the answer is hidden in the clue.
'RYE' can be found hidden inside 'bakery eaten'.
(Other definitions for rye that I've seen before include "Whiskey ingredient" , "Kind of serial or American whiskey" , "Grass; whisky" , "Grain used in flour and whiskey" , "Type of grass" .)