Toxic. When potatoes germinate or turn green, they produce a substance called Solanum nigrum, which is a toxic substance. Once ingested, it will cause food poisoning, and the temperature at which we cook can't be decomposed at ordinary times, which means that even if it is cooked, it is toxic.

Germinated potato

Solanum nigrum is a toxic glycoside alkaloid. Its melting point is 248℃, and it decomposes at about 280-285℃. Although cooking can not reach the decomposition temperature at ordinary times, Solanum nigrum can be dissolved in water and can be decomposed and destroyed after heating with acetic acid. Therefore, soaking potatoes in water before eating and adding appropriate amount of white vinegar when frying are more conducive to food safety.

It is worth noting that not only germinated potatoes are poisonous, but also blue potatoes are poisonous. When storing potatoes daily, try to keep them in a cool and dry place to avoid contact with water and reduce the possibility of potato germination.