It is well known that when grilling meat (such as roast duck, roast chicken, lamb skewers, etc.), a variety of polycyclic aromatic hydrocarbon compounds are produced. Various polycyclic aromatic hydrocarbon compounds basically have carcinogenic effects, especially "benzo(a)pyrene" is representative, and has a very clear carcinogenic effect, which can cause gastrointestinal cancers such as gastric cancer. Moreover, benzo (a) pyrene has strong embryo toxicity, which can poison the fetus of many experimental animals.

　　Because benzo (a) pyrene has good fat solubility and can be dissolved in fat, roast duck oil (grease that oozes from duck during roast duck) will contain more benzo (a) Pyrene. Although I do not currently have specific data on the content of benzo(a)pyrene in roast duck oil, I believe its content is very large. It is terrible to cook food with this oil, or to use it for barbecue food (such as shish kebab, grilled vegetables, grilled buns, etc.) It is said that roast duck oil is mostly used for vegetable raw materials such as roasted vegetables and tortillas.

　　According to the National Regulations on the Management of Waste Edible Oils and Fats in Food Production and Operation Units, waste oils such as roast duck oil cannot be used for consumption. Waste oil and fat can only be sold to waste oil and fat processing units and waste purchase units. Therefore, it is illegal to sell roast duck oil.

　　 lawless and unscrupulous merchants, plus ignorant and fearless consumers. You can understand why the prevalence of cancer among urban residents has doubled in the past two to three decades.

　　Barbecue is very popular in the streets and alleys of Dalian. Especially in the current season, many communities are smoky and the barbecue business is booming. The diners were unaware of the harm and ate with relish.

　　Barbecue, especially the street fire (charcoal fire) barbecue, has many health risks, most of which point to cancer. In addition to the waste roast duck oil described in this article, the harmful factors are:

　　Soak the meat with nitrite to make the kebab look good and delicious (the hazard is carcinogenic)

　　Barbecue Produce harmful substances benzo(a)pyrene and heterocyclic amine (the hazard is carcinogenic)

　　Soak horse meat and cat meat with sheep oil and add condiments like “lamb flavor” to impersonate lamb (unknown hazard) )

　　The ingredients are not cleaned, the tableware is not sterilized, a large number of bacteria breeds (the hazard is food poisoning)

　　Sheep urine bubble duck meat bubble pretends to be lamb (the harm is equivalent to drinking sheep urine)

　　Severely disrupts environmental hygiene (eating barbecues anywhere is not less harmful than spitting)