The most common and most likely answer to this crossword clue is the 7 letter word BOURBON
I've seen this crossword clue in Financial Times
B
O
U
R
B
O
N
More clues leading to the result BOURBON
- Rose as a reactionary in America
- American drink in French house
- Whiskey for French royalty
- The smell of us is hidden by case of Bulgarian whiskey
- Whiskey or biscuit in French house?
- Drink or biscuit in French house?
- Our good Parisian backing British member of royal family
- A drink and a biscuit
- French line in whisky
- French royal, a stiff one?
Buddy explains!

The straight part
We know that "whiskey" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case whiskey = bourbon.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 BOURBON mean?
BOURBON noun- A whiskey distilled from a mixture of grains in which at least 51% is corn, aged in charred, new oak barrels. Made in the United States.
- A serving of bourbon whiskey.
- A Bourbon biscuit.