The process involves dissolving the extract in ethanol, then placing the mixture in a freezer to chill.
[citation needed] Food products containing non-processed oils, such as fats and waxes with higher melting points, will crystallize in refrigeration temperatures.
This precipitation could result in products like salad dressings separating during cold storage.
[citation needed] Winterization is also used in refining biofuel, as it improves low temperature flow properties.
[4] Winterization often follows supercritical CO2 extraction, for the production of cannabis oils to be used in vape pens and capsules.