Jumps to get beer ingredient (4)
I believe the answer is:
hops
I believe this clue is a double definition.
'jumps' is the first definition.
(hopping is a kind of jumping)
'beer ingredient' is the second definition.
(I've seen this in another clue)
'to get' acts as a link.
(Other definitions for hops that I've seen before include "what could make you bitter" , "Leaps on one leg" , "Beer flavouring" , "Shop around for beer material" , "Skips" .)