Sweet potato leaves (sweet potato leaves)

Sweet potato, also known as sweet potato, white taro, sweet potato, sweet potato and so on. Sweet potato leaves, that is, the tender leaves at the top or both sides of the stem of sweet potato seedlings on the ground, can be harvested in the four seasons in the south. The common leaves of sweet potato leaves are chicken-claw-shaped, five-claw-shaped, heart-shaped and so on, and the petiole is green, green and purple. Sweet potato leaves, according to the test, each 100 grams of fresh sweet potato leaves contains 2.28 grams of protein, 0.2 grams of fat, 4. 1 gram of sugar, 0.6 mg of mineral potassium/kloc-0, 2.3 mg of iron, 34 mg of phosphorus, 6.42 mg of carotene and C0.32 mg of vitamin C. Compared with common vegetables, the contents of minerals and vitamins are superior, and the content of carotene is even higher than that of carrots. Therefore, the Asian Vegetable Research Center has listed sweet potato leaves as a highly nutritious vegetable variety, calling them "vegetable queens". In recent years, there has been a "sweet potato leaf fever" in Europe, America, Japan, Hong Kong and other places. Foods made of sweet potato leaves have even been put on the dining tables of hotels and restaurants. Now there are various varieties of sweet potato leaves for sale in the market, and potato leaves have become a modern food.

Sweet potato leaves have health-care functions such as improving immunity, stopping bleeding, reducing blood sugar, detoxifying, and preventing and treating night blindness. Regular consumption can prevent constipation, protect eyesight, keep skin delicate and delay aging. There is also a record in "Seeking the Origin of Materia Medica", which holds that sweet potato: "Cool blood and promote blood circulation, broaden the stomach, relieve constipation, and remove stasis and toxin." It is especially suitable for people with chronic constipation. You can also eat 250g fresh sweet potato leaves with oil and salt, and eat them once, once in the morning and once in the evening on an empty stomach, which is suitable for people with dry stools. As the folk proverb goes, "There are sweet potatoes in every meal, so you can swallow them."

There are many ways to eat sweet potato leaves. Here is a brief introduction. No matter which way you eat it, it can give people a fresh, smooth, fragrant and delicious feeling.

1, stir-fry the sweet potato leaves with shredded pork, which is fragrant and sweet and has a unique flavor.

2. Boil the sweet potato leaves in soup or put them in porridge.

3. Cook with peanut noodles or bean noodles to make slag tofu.

4. Take fresh and tender leaf tips, boil them in boiling water, and use sesame oil, soy sauce, vinegar, Chili oil, mustard, ginger juice and other seasonings to make cold salad, which is light green in appearance and can make people appetite.

5, garlic sweet potato leaves: wash the tender sweet potato leaves and stems, put them in a boiling water pot, remove them and shower with cold water, cut into sections. Peel garlic and mash it. Put the wok on fire, put the vegetable oil to 40% heat, let the garlic stir-fry until fragrant, add the tender sweet potato leaves and stems to stir-fry, add fresh soup, refined salt and yellow wine to taste, add monosodium glutamate and sesame oil, sprinkle with the remaining garlic and mix well.

6, oyster sauce sweet potato leaves: sweet potato leaves pick off the old stems, rinse with water; Shred red pepper; Flatten garlic to remove clothes; Mix 1/2 tablespoons of raw flour and 3 tablespoons of clear water into raw flour water; Boil the water in the pot, add 1 tbsp of salt and 2 tbsp of oil, add sweet potato leaves and scald until the leaves are soft, and drain; Heat 3 tablespoons of oil in the pan, stir-fry garlic and shredded red pepper, and pour 1 cup of water; Add 3 tbsps of oyster sauce, 1 tbsps of rice wine, 1/3 tbsps of white sugar and 1/5 tbsps of salt, mix well and boil, and pour in cornflour water to thicken; Add the blanched sweet potato leaves and stir well. Serve.

7, stewed melon with sweet potato leaves: 60 grams of fresh sweet potato leaves, melon 100 grams, stewed. It is mainly used for treating diabetes with lung and stomach dryness-heat, polydipsia and polydipsia, dry mouth, thin body and hunger, red tongue edge, Huang Gan coating and rapid pulse.

The processing technology is as follows:

1. Process flow: raw materials → blanching → salting → batching → bagging → sealing → sterilization → finished product.

Second, the processing points

1, raw materials. Take sweet potato tender leaves, remove impurities, silt and moldy leaves, put them in a washing tank, wash them with flowing water, and take them out to drain water.

2, blanching. Clean sweet potato leaves, soak them in 1% salt solution 10 hour, clean them, soak them in 1% sodium carbonate solution for 8 minutes, take them out and put them into 3% salt solution with 0. 17% baking soda and ph value of 8, and the temperature of the solution is 95℃ ~.

3. Salting. The sweet potato leaves are soaked in 10% salt solution containing 0.2% calcium chloride, and the salt concentration is kept stable, and the salt concentration is increased by 2% every day until the concentration reaches 16%, and pickled for 4-5 days, desalted and drained.

4. Prepare spices. Crushing 0.2% star anise, 0.4% ginger, 0.08% clove, 0.08% cinnamon, 0.05% white pepper and 0. 1% fennel, bagging, boiling in water for 2 hours to make up the water to 50 kg, cooling, adding 0.02% ethyl lactate, 0.02% ethyl acetate and 0.02% ethyl acetate.

5, soup formula. 2% of the above spices, 20% of white sugar, 2% of salt and 0/%of edible white vinegar.

6. Mix and bag. Put the treated sweet potato leaves into a compound bag quantitatively, and then add a proper amount of soup. 2% salt, 0. 1% sesame, 1% chilli oil, 0.2% monosodium glutamate, 0. 1% ginger powder, 0.5% white sugar and 0.02% dehydroacetic acid can also be added to sweet potato leaves. The thickness of the finished product should be less than 15 mm, and the content should be 3 ~ 4 cm away from the bag mouth.

7, sealing, sterilization. The packed bags are sealed in vacuum, and then sterilized in a sterilization kettle, usually at 12 1℃ for 15 minutes.

8, heat preservation, inspection. The finished product is kept at 37℃ for 7 days, inspected, turbidity and bag swelling of the soup are removed, and the finished product is boxed.

There are all kinds of sweet potato leaves for sale in the general market, which are very popular with the elderly and the younger generation who love beauty. In the past, after farmers harvested sweet potatoes, they threw them in the ground together with the stems, or used them as feed for livestock, which is very regrettable. But now there are canned pickled sweet potato leaf side dishes for sale in the Japanese market. Koreans have long made it into one of the pickles, and we can also add salt to make it into pickles and side dishes for auxiliary consumption.

Summer and autumn, when sweet potatoes are harvested and listed, people who like food and care about nutrition may wish to try sweet potato leaves. I believe you will like them.