Drink from tap’s to sell (4,5)
I believe the answer is:
milk stout
'drink' is the definition.
(type of beer)
'tap's to sell' is the wordplay.
'tap's to' becomes 'milks' (I am not sure about this - if you are sure you should believe this answer much more).
'sell' becomes 'tout' (to tout something is to sell it).
'milks'+'tout'='MILK STOUT'
'from' is the link.
(Other definitions for milk stout that I've seen before include "drunk in pub" , "drink" , "Porter" .)