Bird's nest-the correct translation is SWIFLETS NEST, which has always been regarded as a tonic. It is a kind of bird's nest, which grows in the waters of Southeast Asia, Indonesia, Singapore and Thailand, and likes to live in caves on the cliffs of Hainan. A bird named "Jin Siyan" weaves moss, seaweed and soft plants and mixes their feathers and saliva to form a nest as a hiding place. People take this bird's nest down, and after refining and selecting it, it becomes a valuable bird's nest.

Jin Siyan nests three times a year, and the first nest is thick and white. Because Jin Siyan has a long winter, a long rest time, enough nutrients are stored in the body, and the quality of saliva is better, so the nest built is better and thicker, shaped like a lamp, hence the name Zhan Yan, which is the best in bird's nest. In June, Jin Siyan made another nest. Because of the short distance, his physique can not be fully recovered, so the quality of the nest is poor, thin and hairy, which is obviously slightly worse than the first time. In September, Jin Siyan built a nest for the third time. It is said that because Jin Siyan is approaching the production period, time is short, and physical strength and saliva are not fully supplemented, the swallow is in urgent need of feeding. So the third nest must be worse than the first two. Therefore, it is not credible to choose more feathers and impurities to make liquid, and even the blood is spit out and turned into blood swallows. There is a kind of "blood swallow" in the nest. Many people mistakenly think that it is called "blood swallow" because swallows lack saliva and even vomit blood to build nests. In fact, the Blood Swallow was built by a kind of "Jin Siyan with a brown tail". This swallow may drink different water quality, or it may be because of minerals and other factors. Its saliva is red, so it has built a "blood swallow" nest.

Blood swallows are mainly produced in Luolanyan Mountain, Kangshi Mountain, Songkhla Mountain and other places in Thailand, and are not formed by the blood spit by the legendary swallows. Data show that the quality of blood swallow is actually better than that of white swallow, and the aroma and components obtained by soaking are not as good as those of Bai Yan. Blood swallows are precious only in recent years.

The other is called "Bai Yan", which is mostly produced in Indonesia, and the other is called "Mao Yan", which is mostly produced in Brunei and Borneo. This Mao Yan is thin and black, full of feathers and impurities. It is mainly made of a kind of "Jin Siyan with a gray waist", and there are too many other impurities and feathers, which are collectively called Mao Yan.

Senior doctor Jiang Runxiang analyzed that bird's nest can promote cell division (not cancer cells), stimulate lymph gland cells, promote kidney development, have immune and antibacterial effects, and maintain youthful vitality. Bird's nest has the same effect regardless of origin and grade. Bird's nest is best stewed with peeled old chicken. Bird's nest also has "domestic swallow" and "house swallow", which are made by living in a big ancient house and nesting. Bird's nest was only used as medicine in the Yuan Dynasty, and it can nourish the skin. Bird's nest is rich in protein, carbohydrates, ash, phosphorus, calcium, iron, potassium and other nutrients, which is a good product for nourishing human body.

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People in China think that the most beautiful food often has the aesthetic characteristics of strong imagination. The collection and cultivation of this feature is not through investigation, anatomy, observation and experiment, but all from imagination and speculation. Of course, the most "beautiful" foods are four in the eyes of Chinese people: bird's nest, bear's paw, shark's fin and abalone. Here, let's take a look at how complementary, embarrassing and valuable they are one by one.

What is bird's nest? All the data claim that it is "a tonic with high nutritional value", and even university researchers and chemists have issued certificates that it "contains 49.9% protein, a lot of bioactive protein molecules, and a lot of fat, phosphorus, sulfur, calcium, potassium and other ingredients, which has the function of nourishing yin and strengthening the body." Zhao Xuemin's Compendium of Materia Medica in the Qing Dynasty simply said: "Bird's nest can nourish lung yin, eliminate phlegm and relieve cough, and make it clear, which is a holy medicine to recuperate fatigue. Any disease of lung deficiency that cannot clear the disciples can be treated with this. " Experts in the new era found that bird's nest contains epidermal growth factor and auxiliary cell division components, which is helpful to stimulate cell growth and reproduction, promote human tissue growth, cell regeneration and immune function caused by cells. In addition, bird's nest also contains a lot of mucin, glycoprotein, calcium, phosphorus and other natural nutrients, which have the effects of moistening lung and dryness, nourishing kidney and yin, and tonifying deficiency, and can enhance the body's resistance to diseases and help to resist colds, coughs and colds. Therefore, it is the most effective for smokers and people with respiratory diseases, and it is a pure and noble natural health care product.

Is there really evidence? Actually, there is no such grand "theory", probably because it is difficult and rare. The Bird's Nest is the Bird's Nest in Jin Siyan. Jin Siyan flies from Siberia and other places to natural caves along the tropical coast to breed every year from 65438+February to March of the following year, so it is necessary to build nests. This is a good opportunity for collectors to destroy people's nests. Collecting bird's nests on the climbing wall is a very hard and dangerous job. Collectors climb between steep cliffs, and if they slip and fall into deep valleys, they will be shattered. It's the first time to harvest it. It's pure in texture and hairless. It is the top grade of bird's nest and is regarded as the "official swallow" of tribute; Secondary mining, because of the tight time, rough nest and many impurities, is only called "Mao Yan"; Three times, it seems like a "pity", because Jin Siyan forced blood-like mucus from his throat for future generations, some of which were bright red, and the nest he built condensed his painstaking efforts. At this time, the swallow collector stopped to let Jin Siyan have a baby until the mother swallow left the nest with the milk swallow. This is called "lair" or "blood swallow". There is also a kind of bird's nest that is wetted by the liquid oozing from the attached red rock wall, and the whole body is dark red. Also known as "blood swallow" or "red swallow", it is regarded as a treasure in bird's nest because of its "scarce yield".