Why it matters
Crude extract typically contains co-extracted fats and waxes that cloud the final product, alter mouthfeel, and (for vape carts) clog hardware. Winterisation dissolves the crude in ethanol, chills it well below freezing, and filters out the precipitated lipids before solvent recovery.
In practice
A properly winterised extract is clear, smooth, and easier to formulate. Most premium CBD oils and most cannabis vape carts are winterised.
Common confusion
Winterisation removes some of the plant’s lipid-bound trace compounds. The trade-off between purity and matrix completeness is one of the technical reasons “full-spectrum” claims vary so much in practice.
This glossary entry is editorial content reviewed against primary sources. It is not medical advice. See our Editorial Policy.