A new, different, additional drink (7)

I believe the answer is:

another

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'additional drink' is the definition.
The answer and definition are not the same part of speech.

'a new different' is the wordplay.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'different' becomes 'other' (similar in meaning).
'a'+'n'+'other'='ANOTHER'

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(Other definitions for another that I've seen before include "A different one" , "On earth (anag.)" , "No heart (anag.)" , "encore?" , "second" .)

I've seen this clue in The Daily Express.

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