Brewpub pour (4)
(Other definitions for beer that I've seen before include "Hop-flavoured drink" , "... this at pub?" , "Hop drink" , "Drink brewed with malt" , "It may be 13 across-ed!" .)
'brewpub pour' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ale that I've seen before include "Alcoholic beverage" , "The A in CAMRA" , "A drink; sounds like become ill" , "Stout" , "brew" .)