distill
Definitions
To purify a liquid by vaporizing it through heating and then condensing the vapor back into a liquid.
To extract the essential meaning or most important aspects of something.
Examples
The chemist worked for hours to distill the essential oils from the lavender plants.
It is difficult to distill such a complex theory into a single, easy-to-understand paragraph.
The author managed to distill years of research into a concise and compelling book.