Young eat nuts and drink (5,3)
I believe the answer is:
green tea
'drink' is the definition.
(type of tea)
'young eat nuts' is the wordplay.
'young' becomes 'green' (green can mean young or inexperienced).
'nuts' indicates an anagram (nuts can mean crazy).
'eat' with letters rearranged gives 'tea'.
'green'+'tea'='GREEN TEA'
'and' is the link.
(Other definitions for green tea that I've seen before include "Beverage" , "Infusion" , "Colourful drink for teenager" , "Oriental leaves" , "Teen rage (anag.)" .)