1990, David R. Erickson (editor), (World Conference Proceedings) Edible Fats and Oils Processing: Basic Principles and Modern Practices, page 103:Some oils which are frequently winterized to produce salad oil are: refined and lightly hydrogenatedsoybean oil, cottonseed oil and some varieties of rapeseed oil.The continuous miscellawinterizing process takes from 45 min to 1 hr to produce +15 hr cold test oil.