Street not allowed to provide ale (5)
I believe the answer is:
stout
'ale' is the definition.
(stout is a kind of ale)
'street not allowed' is the wordplay.
'street' becomes 'st'.
'not allowed' becomes 'out' (I've seen this before).
'st'+'out'='STOUT'
'to provide' acts as a link.
(Other definitions for stout that I've seen before include "Fat - strong" , "Beer with malt" , "Strong; drink" , "drinks?" , "Portly - type of dark beer" .)