Apes' food (5,4)
I believe the answer is:
mushy peas
'food' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for mushy peas that I've seen before include "Vegetable to go with fish and chips?" , "Squidgy green side dish served in a greasy spoon cafe" , "Green favourite up north" , "Squishy green food" , "Accompaniment to fish?" .)