TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The waxy impurities comprise the at least one phosphorus-containing compound. At least one phosphorus-containing compound comprises hydratable phosphatides and/or non-hydratable phosphatides.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: In method (M1), the cooling involves cooling the renewable oil to a temperature below 5 (preferably below 3, especially below 1) degrees C. Separating involves centrifuging the oil-polymer mixture. The renewable oil comprises phosphorus-containing compounds, and the binding step involves binding the polymer to the phosphorus-containing compounds. The renewable of comprises free fatty acids, and the binding step involves binding the polymer to the free fatty acids. The binding step involves mixing the cooled renewable oil and the polymer to form an oil-polymer mixture. In method (M2), the cooling involves cooling the renewable oil to a temperature below 40 (preferably below 36, especially below 33) degrees C. Preferred Components: The renewable oil comprises vegetable oil and/or animal oil. The renewable oil comprises corn oil. The renewable oil is crude renewable oil. The renewable oil is renewable oil that is at least partially refined. The cloud point of the refined renewable oil is at least 2 degrees C (preferably at least 4 degrees C, especially at least 6 degrees C) lower than the cloud point of the renewable oil.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The polymer is an edible organic polymer, or polyvinyl polypyrrolidone polymer. EXAMPLE - A 100 kg crude corn oil sample containing 14 wt.% free fatty acids and phosphorus-containing compounds, such as phospholipids or their derivatives was obtained. The oil was cooled in a refrigerated tank to -6 degrees C. An amount of 1-2 kg polyvinyl polypyrrolidone (PVPP) was added, and mixed into the renewable oil using an industrial mixer. The polymer was mixed into the oil for 5 minutes, while maintaining the oil at -6 degrees C. The resulting oil-polymer mixture was centrifuged, so as to separate precipitated particles from the renewable oil. The refined oil was then collected. About 95% of the original oil was recovered in the process and the cloud point was reduced by 4 degrees C.