Prohibition includes English food (4)
I believe the answer is:
bean
'food' is the definition.
(bean is a kind of food)
'prohibition includes english' is the wordplay.
'prohibition' becomes 'ban' (synonyms).
'includes' is an insertion indicator.
'english' becomes 'E' (abbreviation as in OED).
'ban' going around 'e' is 'BEAN'.
(Other definitions for bean that I've seen before include "It's often baked" , "See 12 Down" , "Broad, French or kidney?" , "Haricot or runner?" , "Edible seed" .)