The most common and most likely answer to this crossword clue is the 4 plus 3 letter word HERB TEA
I've seen this crossword clue in Financial Times
H
E
R
B
T
E
A
More clues leading to the result HERB TEA
- Breathe, stirring hot soothing drink?
- Bad breath: has taken tablet or tisane?
- The bare ingredients of a brew up
- Breathe when drunk into drink
- Breathe out and have a drink
- Breathe out, it’s healthy
- Breathe freely — here’s a sort of infusion
- Drink with girl’s besties to start with and then eat out
- Drink, breathe, drunk
- Drink, and breathe out
Buddy explains!

The straight part
We know that "tisane" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tisane = herb 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.