The most common and most likely answer to this crossword clue is the 7 letter word DECOCTS
I've seen this crossword clue in The Times
D
E
C
O
C
T
S
Buddy explains!

The straight part
We know that "Extracts" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case extracts = decocts.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 DECOCTS mean?
DECOCTS verb- To make an infusion.
- To reduce, or concentrate by boiling down.
- To heat as if by boiling.
- To reduce or diminish.
- To digest in the stomach.
- To devise.