The huntsman's drink? (6)
I believe the answer is:
chaser
I believe this clue is a double definition.
'the huntsman's' is the first definition.
(I've seen this before)
'drink?' is the second definition.
(I know that chaser is a type of drink)
(Other definitions for chaser that I've seen before include "One who pursues - one drink after another" , "Beer after whisky, say (or vice versa)" , "Drink of beer after spirit" , "Drink following one of another sort" , "Pursuer - of beer after whiskey?" .)