Winterization

ˈwin-tər-ə-ˌzā-shən | Noun
Also known as “de-waxing,” winterizing is a refinement process used to remove fats, waxes and lipids from extracts. This is achieved by mixing the extract with ethanol, freezing the solution to allow the undesirable compounds to precipitate from the solution, passing the solution through a filter, and finally removing the ethanol from the solution. The final product is considered a winterized extract.