1. Prepare 4 sweet potatoes, wash and air dry or air dry naturally;

2. Put the washed sweet potato on the grill and spread a layer of tin foil to prevent the sweet potato from dripping into the oven;

3. Turn off the oven and heat it up and down at 200 degrees for 20 minutes;

Take it out after 4.20 minutes, turn it over and put it in, so that the heating will be more uniform;

5. Continue to bake for 20 minutes, then unplug the power, don't open the oven door in a hurry, use the waste heat of the oven, continue to bake for 10 minutes, and then take it out to enjoy!

Tip:

1. Try to choose slender sweet potatoes, which are easy to bake thoroughly;

2. It is recommended to wear insulating gloves when turning over, otherwise it will be easily burned by the baking tube;

In addition to the oven, there are several common ways to bake sweet potatoes. If you have a stove at home, you can directly wash and dry the sweet potato and put it on a charcoal fire. This is the simplest one. In addition, you can use a microwave oven, which is a little more complicated. Let me introduce you!

relevant knowledge

Roast sweet potato in microwave oven:

1. Wash the sweet potato, wrap several layers of sweet potato with paper towels and soak them in water to lock the water in the sweet potato;

2. Put the wrapped sweet potato into the microwave oven and turn it over with a barbecue stall or a high fire stall for three or four minutes;

3. Turn on the microwave oven, change the baked sweet potato to the other side, and continue to bake with a big fire or barbecue stall for another three or four minutes;

Bake both sides for three or four minutes, and then take them out of the microwave oven to eat.

Tips:

1. Soak sweet potatoes in clear water for 5 minutes, which can better wash away the soil on them;

2. Don't wipe the water off the washed sweet potato, put it in a water bag, and it won't be too dry when baking;

3. When choosing sweet potato, don't choose round or grotesque, it's not delicious, there are tendons in it, and the taste is poor.

Nutritional value of sweet potato;

Sweet potato is rich in starch, dietary fiber, carotene, vitamins A, B, C and E, as well as potassium, iron, copper, selenium, calcium and other trace elements 10 and linoleic acid. With high nutritional value, it is called the most balanced healthy food by nutritionists. These substances can maintain the elasticity of blood vessels and are very effective in preventing and treating habitual constipation in the elderly. Sweet potato is rich in lysine, which is a good low-fat and low-calorie food, which can effectively prevent sugar from transforming into fat, and is an ideal diet food.

Sweet potato is not only a healthy food, but also a good medicine for treating diseases, which can resist cancer, diabetes, emphysema and benefit the heart.

1, Boiling sweet potato to cure heat jaundice: Boiling sweet potato can cure heat jaundice.

2. Stir-fried sweet potato leaves for relaxing bowels: 250 grams of sweet potato leaves, fried with oil and salt, once eaten twice a day, can cure constipation.

3, raw sweet potato leaves laxative: raw sweet potato leaves mashed, brown sugar adjusted, stick navel, can cure constipation.

4, dry sweet potato vines to quench thirst: a proper amount of dry sweet potato vines, decoction, can cure thirst.

5, sweet potato powder to treat nocturnal emission: treat nocturnal emission and gonorrhea with sweet potato powder every morning and evening.

6, sweet potato leaves cure malnutrition: fresh sweet potato leaves 90-120g, boiled in water, can cure malnutrition and night blindness in children.

Taboo of sweet potato:

1, can't be eaten raw. The starch in raw sweet potatoes is difficult to digest and must be steamed or roasted. Cooking is recommended 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 diagnosed as dampness blocking the spleen and stomach, qi stagnation and blood stasis should also be cautious.

Don't eat on an empty stomach. Eating sweet potatoes on an empty stomach is prone to pantothenic acid and heartburn. In addition, sweet potatoes should be eaten hot, so that the stomach will be comfortable.

4, with pickles, reduce the high sugar content in pantothenic acid sweet potato. Eating too much will produce a lot of stomach acid, causing sour water to spit or "heartburn." Eating pickles at this time can relieve symptoms.

5, sweet potato porridge is eaten, flatulence sweet potato porridge is easy to produce a lot of carbon dioxide gas in the gastrointestinal tract, if eaten too much, it will make people feel bloated and snore; Sweet potato has a lot of sugar, and it will accumulate in the intestine for fermentation, which will also lead to discomfort such as bloating. When eating sweet potatoes, it is best not to drink water while eating, or add a small amount of sweet potatoes to rice porridge to relieve gastrointestinal discomfort. Compared with adults, children are more prone to such problems, and infants are only advised to eat sweet potato porridge; Older children can use sweet potatoes to replace part of the staple food in a certain meal, but it cannot exceed 1/3 of the total staple food.

6. It is not advisable to eat sweet potatoes with black spots. The virus with black spots on sweet potato is not easy to be destroyed and killed by high temperature, and it is easy to cause poisoning, resulting in a series of poisoning symptoms such as fever, nausea, vomiting, diarrhea and even death.

7. Sweet potato should not be eaten with persimmon at the same time. The main ingredient is starch. After eating, it will produce a lot of fruit acid. If eaten with persimmon at the same time, fruit acid can coagulate with persimmon tannin and pectin to form stomach stones. If you eat too much, it should be at least five hours apart. If eaten at the same time, the sugar in sweet potato will ferment in the stomach, which will increase the secretion of gastric acid and precipitate and condense with tannin and pectin in persimmon to produce lumps. When the amount is serious, it can cause gastrointestinal bleeding or gastric ulcer. If you feel upset in the stomach, you must go to the hospital for gastroscopy to see if there is stomach bleeding or gastric ulcer.