15 to 20 minutes can be steamed.
The skin of purple potatoes is relatively thin, it is easy to steam, the specific steaming time and the size of the purple potatoes and the steaming container have a lot to do with, if you are using a steamer, small purple potatoes can generally be steamed after the water boils for about 10 minutes, while larger purple potatoes are recommended to be steamed for about 15 minutes. You can also poke the purple potatoes with chopsticks, if you can poke in, it means that the purple potatoes are already cooked. Large pieces of purple potatoes can also be cut and steamed, which can greatly reduce the steaming time.
Expanded:
Precautions:
Purple potatoes should always undergo the necessary treatment before consumption, they should be washed clean, and should be cooked before eating, if not cooked never eat, because raw will lead to starch in the body, difficult to digest, resulting in indigestion, and even cause gastrointestinal disorders, so we usually eat purple potatoes, must pay attention to cooked before eating, if not cooked never eat.
While the nutritional value of purple potatoes is very high, but also more delicious, but purple potatoes this ingredient is not eaten, if you eat too much at one time, then it will be easy to bloating, or hiccups, because purple potatoes contain a certain amount of magnesium oxide, if too much intake of the body will be easy to gas, so eat purple potatoes to pay attention to the control of the amount of can not be ignored, the amount of consumption to ensure the nutritional health of the body. The only way to ensure nutritional health is to eat.
People's Daily News - purple potatoes cooked into blue potatoes