Scrumpy (5)
I believe the answer is:
cider
'scrumpy' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for cider that I've seen before include "Drink made from pears" , "Alcoholic drink from fermented apple juice" , "Alcoholic drink made from apples" , "Apple-based beverage" , "Drink made from fermented apples" .)