Bird's nests are made of moss, seaweeds, insects, silverfish and other things that are digested by a kind of bird called swiftlet, and then mixed with their feathers and saliva to form a solid form in the air, which is not only the hideout of swiftlet, but also the natural form of bird's nests for us to consume, and after that, people will pick this kind of bird's nests, and then sell them to the general public after refining and selecting them. After that, it will be extracted, refined and sorted to be sold to a wide range of users.
2 How Bird's Nests Are Formed
Bird's nests are made of brown-tailed swiftlets.
Compared to the common swiftlet, this kind of swiftlet is in a different environment. The water in their habitat and the walls of their nesting cavities contain high levels of iron, which makes their saliva red and their nests blood-colored.
3 Fake Bird's Nests
Currently, fake bird's nests on the market are made of agar, silver ear, pig skin, starch, plant branches and leaves.
Take agar fake bird's nest as an example, it refers to the unscrupulous businessmen who use agar to coat the surface of the bird's nest after the bird's nest has been made, so that the bird's nest looks shiny, thick and dense, and increases its weight and volume. However, this kind of fake bird's nest, as long as it is immersed in water, will be dispersed into fragments first, and then gradually dissolve into particles, and there will be no sense of expansion of real bird's nests, so that we can use this as a means of identification.
4 Bird's nest coloring
There are coloring.
The color of bird's nest is usually ivory white, but there are also yellow and red bird's nests. Take the blood bird's nest for example, because its nutritional value is higher than that of the common white bird's nest, so many unscrupulous merchants use the low-priced white bird's nests dyed in red or yellow to sell them as high-priced blood bird's nests or yellow bird's nests, but this kind of dyed bird's nests, as long as it is dipped in water, you will be able to tell if it is dyed with color pigments or not.