Twice-cooked oil is very harmful to the human body. Repeated heating of oil will cause protein structure denaturation and produce harmful substances. Moreover, long-term use will affect liver and kidney function and increase the risk of cancer. risk. Moreover, this kind of fried oil cannot be stored for more than half a day, as it is prone to oxidation and decay.

Reheated oil means that the oil has been heated in the pot, or used, and then recycled again. Nowadays, many unscrupulous merchants collect the re-cooked oil in hot pot, and then mix it with new oil to cook it and provide it to customers for use, thereby gaining greater profits. There are also our common roadside fried dough sticks, fried fried dough cakes, fried stinky tofu, etc. The oil is heated repeatedly. Some merchants will also mark the replacement once a day, but many merchants never replace it. When there is no cooking oil, they directly pour in new oil and continue processing. These foods are usually very delicious, and many people have one or two every morning. However, long-term consumption is very harmful to the body.

So if you have enough time, try to cook at home. Although it is not as delicious as outside, it is better in health and safety. You can go outside occasionally to improve the taste. And the dishes cooked in restaurants outside often put a lot of seasonings in them. Many elderly people at home are reluctant to throw away fried things and reuse them for cooking. This kind of oil has no nutrients, but contains a lot of harmful substances, and it may also cause the growth of bacteria when stored. For the sake of our health, we should try not to use reheated oil.

When buying oil, we need to go to regular supermarkets to buy it, so that we can buy reliable products. Try not to buy bulk oil in the market. Many bulk oils do not have certification, and you don’t know what kind of products are in them. Moreover, if the bulk oil is often opened, it is easy for bacteria to breed. For the sake of our health, we should try to eat less fried dough sticks and fried products from outside.