Removing stimulant affected gin in a cocktail (14)

I believe the answer is:

decaffeinating

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'removing stimulant' is the definition.
I can't tell whether this definition defines the answer.

'affected gin in a cocktail' is the wordplay.
'cocktail' indicates anagramming the letters.
'affected'+'gin'+'in'+'a'='affectedginina'
'affectedginina' anagrammed gives 'DECAFFEINATING'.

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I've seen this clue in The Independent.

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