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Why do millet and sweet potato boil porridge and produce green foam?
Sweet potato porridge turns green because it is exposed to the air and oxidized, just like apples, bananas and other fruits. It is a truth that it turns black after peeling. To avoid sweet potato porridge from turning green, just soak the sweet potato in water before cooking porridge. Here are the practices:

Preparation materials: 80g of brown rice, 40g of millet, 200g of sweet potato, and appropriate amount of clear water (2000g for casserole).

Production steps:

1 Wash the sweet potato and cut it into pieces for later use, as shown in the figure below.

2. Soak the cut sweet potato in clear water for 5 minutes to avoid blackening after being exposed to air for a long time, and the color of the cooked porridge is not good-looking, as shown in the figure below.

3. Add a proper amount of water to the soaked two kinds of rice, as shown in the figure below.

4. After the fire is boiled, turn to a low fire and cover it for 20~30 minutes (rice is rotten and soft), as shown in the figure below.

5. Finally, add the sweet potato and simmer until the sweet potato becomes soft, as shown in the figure below.

6, millet sweet potato porridge is cooked, as shown in the figure below.

Extended data:

First, the precautions for eating millet

1, millet should be mixed with soybean or meat food, because the amino acid of millet lacks lysine, while the amino acid of soybean is rich in lysine, which can supplement the deficiency of millet;

2, millet porridge should not be too thin; Don't rub it with your hands when washing rice, avoid soaking it for a long time or washing rice with hot water;

3. The protein nutritional value of millet is not better than that of rice, because the amino acid composition of millet protein is not ideal, lysine is too low and leucine is too high, so you can't take millet as the staple food completely after delivery, so you should pay attention to collocation to avoid lack of other nutrients;

4. Millet can be steamed rice, boiled porridge and ground into powder, and can be mixed with other flour to make cakes, steamed buns, silk cakes, steamed cakes, etc. Glutinous millet can also be used for brewing wine, vinegar and sugar.

Second, the taboo of eating sweet potatoes:

1, cannot be eaten raw. The starch in raw sweet potato is difficult to be digested, so it must be steamed thoroughly or baked. It is recommended to use cooking instead of frying.

2, not too much. Although sweet potato can be used as a staple food, if it is used as a staple food for a long time, it may cause malnutrition, especially for special people who have recovered from a serious illness and are pregnant. Those who are diagnosed with dampness blocking the spleen and stomach and stagnation of qi should also be careful.

3. Don't eat on an empty stomach. Eating sweet potatoes on an empty stomach is easy to sour and heartburn. In addition, sweet potatoes should be eaten while they are hot, so that the stomach will be comfortable.

4, with pickles, reduce the high sugar content in pantothenic sweet potatoes. Eating too much will produce a lot of stomach acid, which will cause acid water spitting or "heartburn". At this time, eating pickles can alleviate the symptoms.

5, sweet potato porridge to eat, stomach flatulence sweet potato is easy to produce a lot of carbon dioxide gas in the gastrointestinal tract, if you eat too much, it will make people bloating and snoring; Sweet potato has a lot of sugar, which accumulates in intestinal fermentation, and also leads to abdominal distension and other discomfort. When eating sweet potato, it is best not to drink water while eating, or to add a small amount of sweet potato to rice porridge, which can alleviate gastrointestinal discomfort.

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People's Network-Watch out! Eating sweet potatoes may cause four kinds of harm.