The most common and most likely answer to this crossword clue is the 5 plus 3 letter word GREEN TEA
I've seen this crossword clue in The Guardian
G
R
E
E
N
T
E
A
More clues leading to the result GREEN TEA
- Immature wood cut for infusion
- Teenager fixed drink
- Teenager mixed drink
- Beverage teenager brewed
- Drink and entree prepared and consumed by gran regularly
- Leaves awkward teenager …
- Generate brews, not souchong or rooibos
- Generate fantastically healthy drink
- Time to feed author a drink
- Teenager toyed with gunpowder for example
Buddy explains!

The straight part
We know that "drink" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case drink = green tea.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.