Is the water for steaming purple potato green and poisonous?

nontoxic

The water for steaming purple potato is green, because purple potato is rich in anthocyanin, which is an organic pigment. One of the characteristics of anthocyanins is that it turns red when it meets acid and blue-green when it meets alkali, while tap water commonly used in daily life is alkaline. If tap water is used, it may cause the distilled water to turn green, and anthocyanins are non-toxic. It also has many functions. For example, anthocyanins can reduce the damage of free radicals to cells and prolong the life of cells, which is the consensus of the current scientific community.

2

Is the green water of steamed purple potato drinkable?

Of course.

The green water of purple sweet potato turns blue-green when it meets alkali, which leads to the discoloration of evaporated water. Moreover, anthocyanin is non-toxic and is the most effective free radical scavenger. The evaporated water contains vitamins, protein, sugar, cellulose and other nutrients, which are rich in nutritional value and can be drunk. If the purple potato is not washed, it is not recommended to eat, and the green water is not very delicious. There may be some dust on the surface of the purple potato. It is recommended not to eat.