What oil does the hotel usually use for cooking?

Most restaurants use regular cooking oil, and some "black-hearted" restaurants use waste oil bought at a low price from private small workshops. Waste oil is very harmful to health.

Waste oil, the garbage flowing quietly in urban sewers. Some Taoist priests processed it into "cooking oil" on the table. They fished out a lot of dim, turbid and reddish paste from there every day. These foul-smelling garbage can be turned into clear "edible oil" after only one night of filtration, heating, precipitation and separation, and finally returned to people's dining tables through low-price sales. This three-no product, called "waste oil", is still composed of triglycerides, but the toxic substances that cause disease and cancer are much more than the real edible oil.

"Waste cooking oil" is a kind of non-edible oil with poor quality and extremely unsanitary. Once you eat "gutter oil", it will destroy people's white blood cells and digestive tract mucosa, causing food poisoning and even serious consequences of cancer. Therefore, it is strictly forbidden to use "gutter oil" in the field of edible oil. However, driven by interests, there are indeed some unscrupulous traders who disregard people's lives and process "gutter oil" privately and sell it to some small restaurants as edible oil at low prices, which brings great harm to people's body and mind. Therefore, the name "gutter oil" has become synonymous with all kinds of inferior oil that brings harm to people's lives.