Bird's Nest, also called Swallow's Swallow, is a nest and nest built by mucus and feathers secreted by the digestive gland of the stomach after Jin Siyan and the swallows of the same genus ate fish and seaweed in the sea. Most of them are built on the cliffs of the island, which are shaped like bird's nests on land, hence the name. Among them, "Gong Yan" has the highest nutritional value and is the most precious; Followed by Mao Yan; "Blood Swallow" has the worst quality. Bird's nest is not only as delicious as bear's paw and shark's fin, but also a well-known high-grade tonic at home and abroad. It is rich in protein, the content can be as high as 50g per100g, and it also contains many amino acids, sugars, inorganic salts and vitamins. Bird's nest has excellent nourishing effect. Anyone who is chronically ill, thin and afraid of eating less can use it as a tonic. It is said in "No Eating" that bird's nest has the functions of "strengthening yang and benefiting qi, harmonizing middle energizer and filling essence, moistening lung and stopping diarrhea, eliminating phlegm and promoting fluid production". According to "Compendium of Materia Medica", bird's nest is "sweet and flat in taste, nourishing lung yin, resolving phlegm and relieving cough, tonifying deficiency and clearing away profits, and it is the holy medicine for regulating deficiency and diarrhea". Bird's nest also has anti-aging, healing and self-care effects. Stewed with bird's nest, tremella and rock sugar can cure dry cough, night sweat and lung yin deficiency; Stew bird's nest and bletilla striata with slow fire, add crystal sugar, and take it in the morning and evening to treat chronic bronchitis, emphysema and hemoptysis in the elderly. Before eating, wash the bird's nest with clear water, then soak it in hot water at 80℃ for 3 hours to make it swell and soften, then wash it with tweezers, and then soak it in boiling water at 100℃ for about 1 hour before eating. From 1880, the Yanwu ancestral home of Bird's Nest Factory has been producing bird's nest, and there have been strict technical standards to distinguish bird's nest grades. After Kloc-0 entered the mainland market in the 20th century, it formulated the first Shanghai enterprise standard approved by Shanghai Pudong Technical Supervision Bureau, and also the first Indonesian bird's nest standard in the world, including the following provisions on the classification of bird's nest: Bai Yan is the first complete and full lamp shape in Jin Siyan, with white color and crystal clear. First-class Bai Yan: The shape of the lamp is relatively complete, full, white in color and crystal clear. Second-class Bai Yan: The lamp shape is incomplete with several cracks, full and white in color. First-class Bai Yan strips: larger strips formed by breaking white swallow lamps during picking or transportation. Second-class Bai Yan strips: smaller strips formed by breaking the white swallow lamp during picking or transportation. Bai Yan Triangle: A triangular white swallow-shaped lamp formed by Jin Siyan's Bird's Nest in the corner. Bai Yan, Cape: When Jin Siyan built a nest, it stuck to the wall and tasted delicious. White swallow net: a slender net supporting eggs and Xiaoyan in the middle of bird's nest, with a delicate and smooth taste. Bai Yan: White swallow lanterns are tiny broken swallows formed by squeezing during picking or transportation. Hairy Bai Yan: The cup shape is relatively complete and full, and there are some Yan Xumao in the cup. Cave Bai Yan: Picking in the cave, the lamp shape is relatively complete, not full, the color is yellow, and it is difficult to soak. Characteristic blood swallow: the cup is full and full, the color is red, and the red has a sense of transparency. First-class blood swallow: the cup is relatively complete, full and red in color. Triangle Blood Swallow: A triangle red tuxedo formed by Jin Siyan's Bird's Nest in the corner. First-class blood swallow: a large piece of blood swallow broken during picking or transportation. Second-class blood swallow strips: smaller strips formed by squeezing blood swallow cups during picking or transportation. Blood Swallow: A small swallow crushed during the picking or transportation of blood swallows. Characteristic huangyan cake: huangyan is processed, and the color is formed due to different foods, and there are stripes on both sides. Jin Siyan cake with special features: processed from Bai Yan, mostly made from Dongyan and Mao Yan, with hard taste and long soaking time. First-class enterprises set standards, and the grading standard of Indonesian bird's nest in nest factory is not only the basis for consumers to buy bird's nest, but also the guide for the grading of bird's nest in the world. Bird's nest is flat. You can eat bird's nest during eating Chinese and western medicine or health food, as long as you don't eat it at the same time. The nutrition of bird's nest without cover will not be lost, but the bird's nest stew emphasizes sealing and heating, putting the bird's nest raw materials into the stew pot, and adding the cover to prevent the air from escaping, so as to obtain the rich aroma effect of bird's nest. And "Bao" is a cooking method based on soup, and it is generally better to cook with Bao. Its characteristic is that the main ingredients and ingredients are dissolved in the soup through the boiling process, so that the soup is sweet and moist, but this will not show the shape and taste of the original bird's nest. The simplest stewing method of bird's nest: after cleaning the surface of bird's nest, soak it in a bowl of mineral water or purified water at different times (about10g with 300 ml purified water), because the bird's nest has nutrients dissolved in water during soaking, so don't pour out the water for cleaning bird's nest, and stew it with this bowl of small fire at different times. After stewing, it can be served with rock sugar, milk, honey, soybean milk and so on. For specific steps, please refer to the "Bai Yan Triangle of Hand Stewed Bird's Nest Factory" on the homepage of Bird's Nest Secret column, and the specific website is: /intro/detail.asp? Id=322 1。 Bird's nest pays attention to eating less and more meals, and keeps a regular diet. Dry bird's nest is 3-5g each time, and instant bird's nest is 20-30g each time. It is recommended to eat on an empty stomach, once in the morning and evening, once a day or once every other day. If you want to strictly control your weight, please add less rock sugar and eat it every morning. 2. Chinese medicine believes that conditioning cannot be achieved overnight, and it is generally eaten for more than half a year. 3. The fat content of bird's nest (0.35/ g) is very low, which is 1/4( 1.4/g) of tremella, 1/65438(4.8/g) of tofu and 65438(6.4/g) of eggs. The total amount of essential amino acids in bird's nest (18.64/ g) is very high, which is 8.3 times that of tremella fuciformis (2.22/ g), 5.4 times that of tofu (3.47/ g) and 4 times that of eggs (4.61g). Essential amino acids must be obtained from food and cannot be synthesized by human body.