Baggage handler's beer (6)
I believe the answer is:
porter
I believe this is a double definition.
'baggage handler's' is the first definition.
(I've seen this in another clue)
'beer' is the second definition.
(type of beer)
(Other definitions for porter that I've seen before include "Drink for a hotel worker" , "Dark sweet ale" , "Stout" , "Bearer" , "Railway worker; the Ruler of the Queen's Navee (G&S)" .)