Exploits solicitor's drink (4,5)

I believe the answer is:

milk stout

'drink' is the definition.
(I've seen this before)

'exploits solicitor's' is the wordplay.
'exploits' becomes 'milks' (milking is a kind of exploiting).
'solicitor' becomes 'tout' (I've seen this before).
'milks'+'tout'='MILK STOUT'

(Other definitions for milk stout that I've seen before include "drink" , "drunk in pub" , "Porter" .)

I've seen this clue in The Guardian.

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