Teenager fixed drink (5,3)
I believe the answer is:
green tea
'drink' is the definition.
(type of tea)
'teenager fixed' is the wordplay.
'fixed' is an anagram indicator.
'teenager' anagrammed gives 'GREEN TEA'.
(Other definitions for green tea that I've seen before include "brew-up?" , "Teen rage (anag.)" , "'Asian herbal drink (5,3)'" , "Colourful drink for teenager" , "Food at the golf club" .)