Crossword Genius

Firm changed menus: what will diners do? (7)


I believe the answer is:


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'what will diners do?' is the definition.
I can't judge whether this definition defines the answer.

'firm changed menus' is the wordplay.
'firm' becomes 'co' (a firm is a company).
'changed' is an anagram indicator.
'menus' is an anagram of 'nsume'.

Can you help me to learn more?

(Other definitions for consume that I've seen before include "Devour" , "Use up" , "Eat, drink" , "Exhaust" .)

I've seen this clue in The Sun.
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