Crossword Genius

Something to eat after a clean-up? (4,3)

Ross

I believe the answer is:

bath bun

I'm a little stuck... Click here to teach me more about this clue!

'something to eat after a clean-up?' is the definition.
I can't judge whether this defines the answer.

'something to eat after a clean-up?' is the wordplay.
'something to eat' becomes 'bun' (bun is a kind of food).
'after' is a charade indicator (letters next to each other).
'a clean-up?' becomes 'bath' (I am not sure about this - if you are sure you should believe this answer much more).
'bun' put after 'bath' is 'BATH BUN'.

Can you help me to learn more?

(Other definitions for bath bun that I've seen before include "Sweet spicy confection" , "Small cake with spices and fruit" , "Rich, sweet little cake" .)

I've seen this clue in the Evening Standard.
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