The most common and most likely answer to this crossword clue is the 8 letter word VERMOUTH
I've seen this crossword clue in The Guardian
V
E
R
M
O
U
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H
More clues leading to the result VERMOUTH
- So bottomless, opening for drink
- Drink that's exceedingly short, say
- Churchman returned, opening alcoholic drink
- Voter, um, is turned with hard drink
- Aromatic beverage clergyman knocked up: drinker, arguably?
- Really brief speaker shows it
- It is truly endless insolence
- Wine very nearly reaches its destination
- It is done without opening hole
- Clergyman served up opening drink
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 = vermouth.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 VERMOUTH mean?
VERMOUTH noun- A dry, or sweet apéritif wine flavored with aromatic herbs, and often used in mixed drinks.
- An aperitif wine that matches the general description of vermouth.