Cooking oil can make dishes appear tender or crisp. In cooking, oil is widely used as a heat transfer medium. Because of the high ignition point of oil, heating can speed up cooking, shorten the cooking time of food and keep the raw materials fresh and tender. Proper control of heating time and oil temperature can also make dishes crisp and crisp, so it is often used for cooking.
Extended data
High temperature lampblack
Through comparative analysis, foreign research institutions point out that people in China like cooking with high-temperature cooking oil, and the stove temperature is about 50% higher than that of western families. Usually edible oil will release smoke containing butadiene under the catalysis of high temperature. Long-term inhalation of this substance will not only change people's genetic immune function, but also easily develop lung cancer.
Research reports show that rapeseed oil is more carcinogenic than peanut oil because rapeseed oil is at high temperature.
It is 22 times higher than butadiene released by peanut oil. In order to avoid this harm, it is best not to heat cooking oil to the boiling point of oil, but to use hot oil to avoid smoking and fire, which will damage health and promote facial wrinkles.
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