There are many kinds of bird's nest in the market, and the bird's nest market is very chaotic, which leads many consumers to tell the difference between true and false bird's nest. So when you buy it, you must identify the true and false: 1, appearance. The fiber density of pure natural bird's nest is obvious. In the process of picking hairs, there are many tiny hairs in the bird's nest, which can only be picked out if it is opened. The fibers that cause bird's nest are sparse. 2. weight Pure natural bird's nest must be below 8 grams. Because the raw material is about 8 grams, the weight of bird's nest will inevitably decrease rather than increase after cleaning, plucking and impurity treatment. Step 3 dry. Be sure to buy dried bird's nest. You can bend from the middle of the bird's nest at both ends. If it bends, it means the bird's nest is wet; if it doesn't move, it means the bird's nest is dry. Because I bought bird's nest, not water. 4. Taste. Pure natural bird's nest is faint egg white flavor, not fishy or smelly. There are two brands with the best quality, Fulinmen and Tongrentang. If it is a gift, it is most appropriate to choose Tongrentang Bird's Nest. If it is for family, it is more affordable to choose Fulinmen Bird's Nest. The quality of other brands of bird's nest is quite different, so it is not recommended to buy it.