The fried oil can't be used for cooking, but can be used for making stewed dishes, flower rolls and other pastry.
many people don't want to throw fried food oil, but also use it for high-temperature cooking or frying. However, this practice is very undesirable, because oil heated at high temperature will produce trans fatty acids and toxic oil oxidation products, and when this oil is used for high-temperature cooking, the output of carcinogens will increase sharply. This kind of oil should avoid high temperature heating and can be used to make pasta such as stews or flower rolls.
many people have a kind of oil at home, and they only use it for cooking, cold salad or frying. However, the heat resistance of different oils is different. Cooking at too high a temperature will accelerate the production of carcinogens and bring health risks.
For example, frying should use the most heat-resistant palm oil, coconut oil, butter, butter, lard, etc. Daily cooking can choose peanut oil, rice bran oil, tea seed oil, refined olive oil, sunflower seed oil, soybean oil and so on with good heat resistance; You can choose flaxseed oil, perilla seed oil, walnut oil and unrefined virgin olive oil with poor heat resistance for cooking, soup and cold salad. ?
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skills to distinguish good and bad edible oils:
first, look at the packaging?
carefully check the trademark of small package oil, especially pay attention to the shelf life and factory date, and pay special attention to those without factory name, address and quoted quality standard code, and don't buy them casually. ?
second, look at the color?
Generally, high-grade edible oil is light in color, while low-grade edible oil is dark in color (except sesame oil). In addition, the color depth of oil is slightly different because of its different varieties, and the processed inferior oil is darker than ordinary edible oil. ?
third, look at transparency?
Generally, high-grade edible oil has good transparency and no turbidity. ?
fourth, see if there is any sediment?
high-grade edible oil has no precipitation and suspended matter, and its viscosity is small.
People's Daily Online-Can fried oil be used for cooking? Avoid these misunderstandings when eating oil
People's Daily Online-Eight Tips to Teach You to Distinguish between Good and Bad Cooking Oil.