Jiaodong Dried Sweet Potato

Sweet potatoes can be stored for a relatively long time, but they can only be stored for one autumn at most. In winter, the sweet potatoes are easily frozen, which affects the taste of the sweet potatoes. Therefore, people often cut the sweet potatoes into thin slices when the sweet potatoes are ripe, and then dry them to make dried sweet potatoes for consumption. Dried sweet potatoes can be preserved for a long time, and eating them does not affect the nutritional content of the sweet potatoes. Sun-drying sweet potatoes is a very popular way of cooking.

Drying sweet potatoes is a tradition in Shandong. After the autumn harvest every year, many villagers cook the sweet potatoes, cut them into slices, and dry them in the sun, which is a local delicacy. There are many ways to eat sweet potatoes. One is to cook it directly, which was often eaten for breakfast in rural areas in the old days. The second is to cook raw dried sweet potatoes, which is to dry them first and then cook them. It was also the staple food of rural people in the past. The third is cooked dried sweet potato, which is first cooked, then sliced ​​and dried. It can be cooked or not when eaten, but it is usually steamed in a steamer until it becomes soft. The fourth is sweet potato noodle soup, which is made by using sweet potato starch (sometimes mixed with flour) to make noodles or squeezing them into strips with a colander and then cooking them in a pot of boiling water, then adding marinade, which is smooth, rich and sweet.

Steps for making Jiaodong dried sweet potato:

First of all, the sweet potatoes harvested in autumn cannot be used to make dried sweet potatoes immediately. Because fresh sweet potatoes contain a lot of starch, the food they cook will be floury and taste bad. Therefore, the sweet potatoes must first be stored in a cellar for a period of time. During the storage process, the starch inside the sweet potato will be converted into polysaccharides. Such sweet potatoes will be very sticky, soft and sweet whether they are boiled or baked. After being stored for a certain period of time, the sweet potatoes can be processed. Washing, peeling and steaming are the basic steps. In the past, people would cook the vegetables without peeling them, and then peel them after cooking. The right temperature for steaming or cooking is a science. If the temperature is too low, the food will be overcooked, while if the temperature is too high, the food will be too watery and difficult to slice.

Second, cut the cooked sweet potatoes into slices or strips and then dry them in the sun. In the past, they were often strung together with branches and hung on trees. Nowadays, people rarely dry them like this. Instead, they spread them out on wire racks or bamboo plates to dry. This drying method is suitable for large-scale processing. Turn it over after drying for a few days and dry it repeatedly.

In windy weather, you need to cover the sweet potatoes with plastic sheeting or gauze, because sand and dust will fall on the sweet potatoes and be difficult to remove. After being dried to a certain degree, the dried sweet potatoes are basically formed.

Many people who have never seen this kind of dried sweet potato, when they see the white frost for the first time, always think that the sweet potato is moldy and hairy. In fact, if dried sweet potatoes are moldy and grow hair, the hair is green and brown. It also smells sour. As long as there is a temperature difference, dried sweet potatoes will easily frost. If the sweet potatoes are dried and shaped and stored at a constant temperature, frost will rarely occur. Therefore, it is actually more difficult to make dried sweet potatoes without any frost.

In the past, due to lack of conditions, the dried sweet potatoes could only be placed in a place with low ventilation and temperature to dry, otherwise they would easily become moldy. However, if dried sweet potatoes are left to dry for too long, they will lose their softness and become hard and difficult to chew, so they need to be steamed before eating. But now with cold storage and vacuum sterilization packaging technology, dried sweet potatoes can be well preserved and can even be stored for a year without any problems. Just look at the "Jin Ye" original juice dried sweet potatoes and you will understand.

Nutritional Value

Jiaodong Dried Sweet Potatoes are low-calorie foods. Sweet potatoes are rich in mucus polysaccharides, which can enhance the body's immunity and are not easily converted into fat in the human body. In addition, sweet potatoes are rich in dietary fiber and rich in vitamins and trace elements. Therefore, eating more sweet potatoes can not only detoxify and beautify the skin, reduce the incidence of colon cancer, but also lose weight, which is very beneficial to the human body. Therefore, sweet potatoes

It is known as the king of fruit and vegetable health food and is the preferred snack food for people who love beauty and health!

Sweet potatoes are very nutritious and are a natural nourishing food that the Chinese people love to use as both grain and vegetable. Modern scientific research has confirmed that sweet potatoes contain a variety of nutrients needed by the human body. Every 500 grams of sweet potato can produce about 2658.75 kilojoules (635 kcal) of heat energy, contains 11.5 grams of protein, 14.5 grams of sugar, 1 gram of fat, 100 milligrams of phosphorus, 90 milligrams of calcium, 2 grams of iron, 0.5 milligram of carotene, and also contains vitamin B1, vitamin B2, vitamin C, niacin, linoleic acid, etc. The content of vitamin B1 and vitamin B2 is 6 times and 3 times higher than that of rice respectively, and the content of vitamin C is 10 to 30 times that of apples, grapes and pears. In particular, sweet potatoes are rich in lysine, which can promote human metabolism and promote development, while rice and flour lack lysine. In addition, eating sweet potatoes together with rice and flour can also play a role in protein tonic and improve its nutritional value. Sweet potatoes also contain a large amount of mucus substances, including mucus protein, mucus polysaccharides, etc. They can maintain the elasticity of the human cardiovascular wall, prevent the occurrence of atherosclerosis, and keep the respiratory tract, digestive tract, and joint cavity lubricated. In addition, the starch and cellulose contained in sweet potatoes can absorb a large amount of water in the intestines and increase the volume of feces. This can not only prevent and treat constipation, but also reduce the occurrence of colon cancer.

Health value

Sweet potatoes contain a lot of cellulose and pectin that are not easily broken down by digestive enzymes and can stimulate the secretion of digestive juices.

And gastrointestinal motility, thereby playing a laxative role. Li Shizhen's Compendium of Materia Medica records that sweet potatoes have the effects of "replenishing deficiency, increasing energy, strengthening the stomach, and strengthening kidney yin." Sweet potatoes are steamed, cut, dried, and harvested and used as food, called potato grains (what we call dried sweet potatoes), which can make people live longer and have fewer diseases. "Some medical books also say that sweet potatoes "have the same benefits as yam, and are beneficial to people if eaten for a long time, and are a food for longevity." People often cook sweet potatoes and rice into porridge with sugar to treat night blindness, bloody stools, constipation, damp heat, jaundice, blood deficiency, irregular menstruation and other diseases caused by vitamin A deficiency.

In recent years, the Japanese have been swept by waves of "sweet potato fever", and men, women, old and young all enjoy eating all kinds of sweet potato foods (such as roasted sweet potatoes, dried sweet potatoes, sweet potato sauce, sweet potato wine, etc.). The reason is that Japanese scientists have discovered that sweet potatoes have many special "medicinal values". An American biologist discovered that sweet potatoes contain "dehydroisoandrostenone", which has anti-cancer effects. Several researchers from the Crop Research Institute of Beijing Academy of Agricultural and Forestry Sciences and the Animal Center of Chinese Military Medical Sciences extracted tumor inhibitors from sweet potatoes for the first time in China and successfully completed animal experiments. Experts believe that sweet potatoes are a good product for cancer prevention.

Sweet potatoes are also a longevity food. In Japan's rural longevity areas, residents eat sweet potatoes from October to April of the following year. There are two longevity villages in Guangxi, China, and residents often use sweet potatoes as their staple food. Currently, there is a craze for eating sweet potatoes in countries such as Japan and the United States, and sweet potatoes are also regarded as a good complementary food for infants and young children. Some people say that eating sweet potatoes will make people fat. This statement has no scientific basis. In fact, sweet potatoes not only do not make people fat, but are also an ideal weight-loss food. It has a very low calorie content, much lower than ordinary rice, so you don’t have to worry about gaining weight after eating it. On the contrary, it can help you lose weight. Therefore, many women abroad regard sweet potatoes as beauty foods. The Kingdom of Tonga, located in the South Pacific, has residents who are mostly muscular and well-proportioned. According to analysis, this is closely related to their daily consumption of sweet potatoes.