Crossword Genius

Identify drink Romeo brought in as evidence of guilt? (11)

Ross

I believe the answer is:

fingerprint

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

'evidence of guilt?' is the definition.
'fingerprint' can be an answer for 'evidence' (fingerprint is a kind of evidence). I am not certain of the 'of guilt?' bit.

'identify drink romeo brought in' is the wordplay.
'identify' becomes 'finger' (I've seen this before).
'drink' becomes 'pint' (I've seen this before).
'romeo' becomes 'r' (phonetic alphabet: alpha, bravo, charlie etc.).
'brought in' indicates putting letters inside.
'pint' enclosing 'r' is 'print'.
'finger'+'print'='FINGERPRINT'

'as' is the link.

Can you help me to learn more?

(Other definitions for fingerprint that I've seen before include "Mark left by handler" , "Dab" , "means of identification" .)

I've seen this clue in The Daily Mail.
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