Drink a saint unconscious! (5)

I believe the answer is:

stout

'drink' is the definition.
(type of beer)

'a saint unconscious' is the wordplay.
'a saint' becomes 'st' (abbreviation).
'unconscious' becomes 'out' (similar in meaning).
'st'+'out'='STOUT'

(Other definitions for stout that I've seen before include "Overweight; porter" , "Resolute" , "Kind of beer" , "pint" , "Dark beer; of heavy build" .)

I've seen this clue in the Evening Standard.

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