One used to carrying strong drink (6)
I believe the answer is:
porter
'drink' is the definition.
(porter is a kind of drink)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for porter that I've seen before include "He should be able to carry" , "Report (anag.)" , "Station worker" , "Doorkeeper; dark beer" , "Hotel luggage carrier" .)