Crossword Genius

Cop recalled self-satisfied male eating donut (7)

Ross

I believe the answer is:

gumshoe

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'cop' is the definition.
(thesaurus)

'recalled self-satisfied male eating donut' is the wordplay.
'recalled' is a reversal indicator (to recall can mean to bring something back).
'self-satisfied' becomes 'smug' (synonyms).
'male eating donut' becomes 'hoe' (I can't explain this - if you can you should give a lot more credence to this answer).
'smug' in reverse letter order is 'gums'.
'gums'+'hoe'='GUMSHOE'

Can you help me to learn more?

(Other definitions for gumshoe that I've seen before include "Foreign investigator" , "Galosh - sleuth" , "Dick" , "Detective (US colloq.)" , "American detective (informal)" .)

I've seen this clue in The Independent.
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