Pepper oil plays an extremely important role in Chinese dishes, especially in Sichuan cuisine, which is an indispensable condiment for both cold dishes and snacks. The traditional method of Sichuan chili oil is to use rapeseed oil, which is heated and then cooled slightly and poured into the dried chili powder. The capsicum red pigment in the chili pepper dissolves into the oil at high temperature, thus making the oil red and bright. For vegetable oil selection, combined with the knowledge I have learned at present, from the point of view of nutrition and health, I personally think that we must choose refined vegetable oil, primary oil and crude oil are not the appropriate choice. Although crude oil has its special fragrance, it contains free fatty acids, pigments and volatile substances. It is the presence of these impurities that makes the oil have different flavors, but also makes the oil smoke at relatively low temperatures. When I was a child, all the oils used at that time were traditional crushed oils. Every time I stir-fried vegetables, the smoke filled the whole room, and the clothes and hair smelled of smoke. Oil fume is not only the source of PM2.5, but also contains a substance of acrolein, which has a strong stimulating effect on the eyes and respiratory tract. In addition, smoking also produces other harmful substances. Usually, the crude oil is processed at high temperature, and some benzopyrene is formed in the process of treatment, which is a carcinogen. The free fatty acids, pigments and odors are removed from the refined oil produced by modern technology, and the smoking temperature can be increased by 50 or 60 degrees, because the oil needs to be heated to a certain temperature when making chili oil, and the refined oil with greatly increased smoke point will not smoke when heated to a certain high temperature, so there will be very little smoke. Relatively speaking, the production of many harmful substances is much healthier. My chilli oil production method is not authentic, nor did I choose authentic real estate chilli, but with the food on hand to make a combination, the chilli oil produced is absolutely fragrant.
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