These five kinds of food are the dirtiest, so boiling water can't wash them clean. Don't ruin your health. Let me use 5 1 health net to have a look.

First, black spot sweet potato

The toxin discharged by black spot pathogen contains sweet potato ketone and sweet potato ketol, which will make raw sweet potato hard and bitter, and can't be killed by boiling, steaming or roasting with fire, and it is harmful to the liver after entering the human body. Patients who are acutely poisoned by eating black-spotted sweet potatoes will have symptoms such as vomiting and diarrhea, and even severe cases will have symptoms such as high fever and asthma.

Second, shrimp: break the shrimp. If it smells like snot, don't buy it! There are many imported and smuggled shrimps in the market, which look beautiful, but contain very toxic carcinogens. After sampling inspection, it was found that many shrimps were dyed with cheap dried shrimps and industrial pigments. You can choose red, orange or yellow. Before buying, you can try to break the shrimp to see if there is any color difference between the inner layer and the outer layer, or soak it in water to see if it will fade and smell it. If this is the case, don't buy it. Please use the same standard to check the dried fish.

Third, dried squid: squid is thick and crisp, don't eat it! When you buy it, judge from the taste first, and don't have a musty smell. In addition, have you ever wondered why the squid in the snack bar is thick and crisp, but we can't do it well ourselves? The point is that many stores use blisters. I don't advocate buying cooked squid, don't buy it, boiling water can't wash away the medicine. Eating it will cause cancer! It takes time to buy dry goods, at least it is safe.

Fourth, rotten ginger