What is the nutritional value of lettuce? How to cook well? Thank you for your questions.

Lettuce is an annual or biennial herb in Compositae. Lettuce can be divided into leaf use and stem use. Lettuce has many names, which are called "Thousand-Daughter Vegetable", "Lettuce" and "Borage" in this cursive script. Lettuce for leaves is also called spring vegetables and lettuce, and lettuce for stems is also called lettuce and fragrant bamboo shoots. There are more lettuce than lettuce in all parts of China. Lettuce is tender, and its stems can be eaten raw, cold, fried, dried or pickled. Lettuce mainly eats leaves or bulbs. In recent years, it has developed in major cities, especially in southern coastal provinces, and has become the main vegetable to increase fancy varieties. Lettuce stems and leaves contain lettuce, which is bitter in taste, high in temperature and drought, bitter in taste, can enhance gastric juice, stimulate digestion, stimulate appetite, and have analgesic and hypnotic effects. Every 1g of nutrients contains 96.4g of water, 6g of protein, .1g of fat, 1.9g of carbohydrate, .4g of crude fiber, 7mg of calcium, 31mg of phosphorus, 2mg of iron, .2mg of carotene, .3mg of thiamine, .2mg of riboflavin, .5mg of niacin and .5mg of ascorbic acid. Dietotherapy: 1. Dredging and eliminating stagnation: Lettuce tastes fresh and slightly bitter, which can stimulate the secretion of digestive enzymes and increase appetite. Its milky serosity can enhance the secretion of gastric juice, digestive glands and bile, thus promoting the functions of various digestive organs, especially for patients with weakened digestive function, decreased acidity in digestive tract and constipation. 2. diuresis and lactation: the potassium content of lettuce is 27 times that of sodium, which is beneficial to the balance of water and electrolyte in the body and promotes urination and milk secretion. It has a certain dietotherapy effect on patients with hypertension, edema and heart disease. 3. Strengthen the body, prevent cancer and fight cancer: Lettuce contains a variety of vitamins and minerals, and has the function of regulating the nervous system. Its organic compounds are rich in iron that can be absorbed by the human body, which is very beneficial to patients with iron deficiency anemia. The hot water extract of lettuce has 9% inhibition rate on JTC-26 cancer cells, so it can also be used to prevent cancer. Peristalsis, dredge digestive tract, help defecate, and can be used to treat various constipation. (1) Sweet and sour lettuce is a famous French dish with beautiful color, sweet and sour crispness and refreshing fragrance. Raw materials: 5g of tender lettuce, 2 fresh tomatoes, 25g of green garlic, 75g of lemon juice (or fresh orange juice), 3g of sugar and 5ml of cold boiled water. A little refined salt Production process 1. Lettuce is defoliated, peeled and rooted, diced and blanched with boiling water; Peel fresh tomatoes and cut into pieces; Chop the green garlic. 2. Put lemon juice, sugar, cold water and salt into a large porcelain bowl and mix well, adjust the taste, then add lettuce diced, tomato pieces and minced green garlic and mix well, store in the refrigerator and take it with you. (2) Pineapple Lettuce raw material lettuce 5g, pineapple (canned) 2g, sugar 1g and white vinegar 5g. Salt, monosodium glutamate, water, the right amount. Production process 1. After peeling, washing leaves and roots of lettuce, cut it into comb back blocks, blanch it with boiling water, control it to dry, then slightly submerge it with refined salt for a while, rinse it in cold boiling water once, drain the water and put it into a plate. 2. Cut the pineapple into small Ding Sheng bowls, add sugar water (white sugar is melted with a little cold water in advance), white vinegar and monosodium glutamate and mix well. After cooling in the refrigerator, pour it on the lettuce pieces, and serve. (3) 2 grams of fried pork with lettuce, one peeled lettuce, a small amount of ginger and garlic, and 3 or 4 peppers. Dice pepper, slice ginger and garlic. Cut the lettuce into rhombic slices, then turn it over and cut it again. Next cut the meat. Separate the fat and thin parts of the meat and slice the lean meat. Slice fat, too. All the materials are ready, start frying. First, put the base oil into the pot to heat it up, then turn down the heat and pour in the fat for refining. After the fat meat becomes translucent, pour the ginger slices and garlic slices into the fire and saute until fragrant, and then pour the lean meat into the stir fry. When the lean meat changes color, pour in lettuce slices and peppers, stir-fry for about one minute, add a spoonful of refined salt, soak well, sprinkle a little cooking wine and soy sauce (soy sauce), stir-fry for three minutes, add chicken essence or vegetarian meal before taking out, and then pour some sesame oil. If you like spicy food, you can also add dried Chili powder when frying. (4) Stir-fried shredded lettuce features: light and refreshing. Material: 1 lettuce, 1 scallion, 1 small section of garlic, 2 grains of oil, 1 tablespoon of salt, 1 tablespoon of chicken essence. Practice: 1. Peel the lettuce, shred it, and cut the scallion into chopped green onion. 2. Heat the oil in the pot, add shredded lettuce, stir-fry for a while, add salt, and then pour it in turn after stir-frying. 3. finally, put the chicken essence and fry it for a few times. (5) Stir-fried lettuce ingredients: 25g lettuce, 2 eggs, 25g agaric, peanut oil, refined salt and monosodium glutamate. Practice: (1) Peel the lettuce, remove the leaves, wash and cut into inches, beat the eggs into a bowl to make egg juice, and wash the fungus and cut into filaments. (2) Put peanut oil into the wok to heat it, pour in the egg liquid and stir-fry it into loose egg pieces, and add the fungus, shredded lettuce and salt to stir-fry until cooked. Leave the fire and add a little monosodium glutamate evenly. Be careful, don't fry for too long, otherwise it won't be crisp. (6) Wash the lettuce with shredded lettuce, peel it and shred it. Boil it in hot water. Immerse in cold water. Remove and drain. Add cooked Flammulina velutipes. Add a little salt, a little sugar, chopped green onion and chicken essence and mix well. Refreshing and delicious. In addition, you can put red oil and other seasonings according to your personal taste.