Drink befuddled teenager (5,3)
I believe the answer is:
green tea
'drink' is the definition.
(type of tea)
'befuddled teenager' is the wordplay.
'befuddled' is an anagram indicator.
'teenager' anagrammed gives 'GREEN TEA'.
(Other definitions for green tea that I've seen before include "Healthy drink" , "Beverage" , "Hot drink - teenager (anag)" , "Infusion" , "Teen rage (anag.)" .)