The fire will pass in ten minutes. As long as you can poke it through with chopsticks, try steaming purple potatoes. The purple potato should be steamed as much as possible, so as to keep the color of the purple potato. Because purple sweet potatoes are rich in anthocyanins, the water at home is generally alkaline, and anthocyanins and acids and bases will change color, blue-green when alkaline and purple when acid.
Specific practices:
1, select some purple potatoes with uniform color and size. Wash the purple potato for later use, put a little water in the pot, put it in a steamer, and put the purple potato on the steamer.
2. Cover the lid, steam for about 20 minutes, and check the maturity with chopsticks. If chopsticks are easy to insert, it means they are ripe and ready to eat.