The process of cleaning oil with cornstarch is a time-tested method that transforms used cooking oil into a clarified, reusable fat that is remarkably close to its original state. Waiting for the oil to cool completely makes the separation process significantly more difficult and less effective.
Clean Frying Oil Naturally with Cornstarch
The cheesecloth acts as a secondary barrier, catching any remaining fine particles that the cornstarch missed. The goal of using cornstarch is to adsorb these impurities—specifically the free fatty acids and particulate matter—without stripping the oil of its beneficial cooking properties.
Resting and Filtration Once the cornstarch is incorporated, the mixture must be left undisturbed for several hours. The key is to perform the process while the oil is still warm, as this allows the cornstarch to effectively bind to the impurities before they solidify and sink.
Clean Frying Oil Naturally with Cornstarch
For every cup of used oil, mix one tablespoon of cornstarch with a small amount of cold water to create a smooth slurry. Store-bought filtered oil can sometimes develop a flat taste, but this method preserves the oil's original flavor profile.
More About Clean oil with cornstarch
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