A drink for the hunter (6)
I believe the answer is:
chaser
This clue is a double definition.
'a drink' is the first definition.
(as in a shot and chaser)
'the hunter' is the second definition.
(I've seen this before)
'for' is the link.
(Other definitions for chaser that I've seen before include "One who pursues - one drink after another" , "Racehorse - search (anag)" , "Beer after whisky - follow that!" , "Racing horse" , "different drink to follow" .)