Crossword Genius

Suspected mug has funny diet drink's last bit in it (9)

Ross

I believe the answer is:

identikit

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

'suspected mug' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'funny diet drink's last bit in it' is the wordplay.
'funny' indicates an anagram.
'last bit' indicates one should take the final letters (I've seen 'last bit of' mean this).
The last letter of 'drink' is 'k'.
'diet'+'k'+'in'='dietkin'
'dietkin' anagrammed gives 'identik'.
'identik'+'it'='IDENTIKIT'

'has' is the link.

Can you help me to learn more?

(Other definitions for identikit that I've seen before include "uninteresting" , "image maker" , "Police hunt picture" , "Reconstructed image of a criminal" , "Formulaic" .)

I've seen this clue in The Guardian.
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