Drinks tea within seconds (6)

I believe the answer is:

mochas

'drinks' is the definition.
(mocha is a kind of drink)

'tea within seconds' is the wordplay.
'tea' becomes 'cha' (cha is a type of tea).
'within' is an insertion indicator.
'seconds' becomes 'mos' (mo can mean a short amount of time).
'cha' going within 'mos' is 'MOCHAS'.

I've seen this clue in The Guardian.

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