Drink swilled by touts (5)

I believe the answer is:

stout

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

'swilled by touts' is the wordplay.
'touts' can be anagrammed to 'STOUT'.
However, I'm not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for stout that I've seen before include "Dark beer; of heavy build" , "tipple" , "pint" , "Portly or stalwart" , "Rather fat; determined" .)

I've seen this clue in the Evening Standard.

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