Spiker of drink? Grown-up needs time to recover finally (11)

I believe the answer is:

adulterator

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'spiker of drink?' is the definition.
I can't judge whether this defines the answer.

'grown-up needs time to recover finally' is the wordplay.
'grown-up' becomes 'adult' (informal term for an adult).
'needs' is a charade indicator (letters next to each other).
'time' becomes 'era' (an era is a period of time).
'finally' indicates one should take the final letters.
The final letter of 'recover' is 'r'.
'adult'+'era'+'to'+'r'='ADULTERATOR'

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I've seen this clue in The Times.

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