The answer is edible.
Why do you say that? It turns out that after peeling potatoes, the plant cells in potatoes come into contact with air and react with oxygen, which leads to the normal phenomenon of discoloration. Not only potatoes, but also apples will turn brown after peeling for a period of time. Don't worry about this change, it is a normal natural phenomenon, not food deterioration or corruption, and it can be cooked or eaten normally.
Although the color of potatoes has changed, it has no effect on nutritional components and can be eaten. However, it should be noted that if it is left for too long, it will also lead to food deterioration and decay, so it is better to eat it as soon as possible.
If the peeled potatoes are not used for a period of time, and they are afraid of discoloration, you can soak them in a pot of cold water to isolate the oxygen in the air and prevent discoloration after oxidation. The same is true of shredded potatoes. Soaking shredded potatoes in water can also wash off starch, and it is not easy to stick to the pot when cooking.
What happens to inedible potatoes?
Germinated potatoes
We often see the news that sprouted potatoes are sent to the hospital by mistake. This is because the sprouted potatoes are poisonous, which will lead to dizziness, weakness, vomiting, diarrhea and other symptoms, even coma or death, which is very dangerous, so the correct way is to throw them away immediately.
Slightly germinated potatoes can still be eaten by digging out the germinated parts with a knife, but remember to soak them in water for a while.
Green potato
If you find potatoes a little green, you'd better throw them away. Although eating this kind of potato may not kill you, there are still rare cases. Some people don't feel anything when they eat at first, then they feel a little weak and finally fall into a coma. Therefore, it is recommended not to eat green potatoes.
What other foods will change color?
Eggs turn green.
When the eggs are boiled for more than fifteen minutes, protein will start to turn green. In fact, this is because there is a chemical reaction between the protein in the yolk and the substance. Don't worry, the eggs under this change can be safely eaten and have no impact on human health.
Purple potato turns green.
Anthocyanin in purple sweet potato is the reason for its discoloration. We often see that when we cook purple potatoes, we will find that the water in the pot turns green, so don't worry. This is because the tap water in China is weakly alkaline, which has a normal chemical reaction with the components in purple sweet potato and does not affect our consumption.
Mung bean soup turns red.
Every time you cook mung bean soup, you will find that mung bean soup has gradually become "red bean soup". Why? In fact, this is also related to water quality. Alkaline water can cause mung bean soup to turn red, and acidic water can cause mung bean soup to turn green, but it does not affect its impact value. If you don't want the mung bean soup to turn red, add some white vinegar to the water.