Because germinated potatoes can make potatoes produce "Solanum nigrum essence", which is a toxic thing, once eaten, it is harmful to human body, so germinated potatoes can not be eaten. The harm is that once this toxin enters the human body and reaches a certain amount, it will cause itching in the mouth and throat, pain in the upper abdomen, nausea, vomiting, diarrhea and other symptoms. If the intake of Solanum nigrum essence is small, the human body will automatically detoxify and be able to restore health; If you eat more Solanum nigrum, you will vomit repeatedly and even affect your breathing.

Usually, when the potato has just sprouted, the small bud has not spread the toxin to the whole potato, so you can eat it further by cutting off the sprouting place.

You should pay attention to the following points when eating potatoes:

1, don't eat immature green potatoes.

2. The parts that have sprouted and turned blue and the rotten parts on the potatoes should be thoroughly removed. If the potato has a large blue area and many sprouting parts, you should throw it away.