The most common and most likely answer to this crossword clue is the 5 letter word JULEP
I've seen this crossword clue in Independent
J
U
L
E
P
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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 = julep.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.
What does JULEP mean?
JULEP noun- A refreshing drink flavored with aromatic herbs, especially mint, and sometimes alcohol.
- A pleasant-tasting liquid medicine in which other nauseous medicines are taken.