Second drink for hunter (6)
I believe the answer is:
chaser
I believe this is a double definition.
'second drink' is the first definition.
(I've seen this in another clue)
'for hunter' is the second definition.
(I've seen this before)
(Other definitions for chaser that I've seen before include "different drink to follow" , "Yellow-Dog Dingo?" , "Pursuer - of beer after whiskey?" , "Follow-up drink" , "Horse; drink following another" .)