Millet sweet potato porridge will produce green foam, which is caused by oxidative browning of starch in sweet potato, which is one of the reasons, and the other is caused by pectin in sweet potato. The main ingredients are millet 100g and sweet potato 100g. Method/step 1. Take the pot on the induction cooker as an example. First put a proper amount of water in the pot and heat it on the induction cooker. 2. Wash and peel the sweet potato in the process of boiling water. 3. Slice the peeled sweet potato, preferably with a hob, which makes it easier to cook. 4. Put the cut sweet potato into the pot, because sweet potato is harder to cook than millet, so put it in before the water boils. 5, Taomi, take out a proper amount of millet, put it in a container and wash it several times. 6. After the water is boiled, add millet and cook for 20 minutes to half an hour. 7. When the porridge becomes sticky, it can be cooked.