The most common and most likely answer to this crossword clue is the 5 letter word GROGĀ
I've seen this crossword clue in The Guardian
G
R
O
G
Ā
Buddy explains!

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 GROGĀ mean?
GROGĀ noun- (original meaning) An alcoholic beverage made with rum and water, especially that once issued to sailors of the Royal Navy.
- (by extension) Any alcoholic beverage.
- A glass or serving of an alcoholic beverage.
- An alcoholic beverage made with hot water or tea, sugar and rum, sometimes also with lemon or lime juice and spices, particularly cinnamon.
- A type of pre-fired clay that has been ground and screened to a specific particle size.