I don't mean to insult you: coffee non-negotiable (2,7)

I believe the answer is:

no offence

'i don't mean to insult you' is the definition.

'coffee non-negotiable' is the wordplay.
'negotiable' indicates an anagram.
'coffee'+'non'='coffeenon'
'coffeenon' anagrammed gives 'NO OFFENCE'.

(Other definitions for no offence that I've seen before include "legal" , "Don't be upset" .)

I've seen this clue in The Guardian.

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