2, the appearance is rough: If you choose a completely dry bird's nest cup, you will feel that the bird's nest cup is rough, especially brittle, and it will make a sound and be easily broken. The surface of the processed bird's nest is coated with a substance, which is dry and thick, but only the skin is dry and the meat is not dry, which is not only difficult to break, but also elastic, and the soaked water appears turbid and even bubbles appear.
3. The appearance should be large and complete: the bird's nest of the top Qiu Zi Yangshengtang should be complete and large (about three fingers falling together). If swallows nest on the beams, the bird's nest will be boat-shaped, and if swallows nest in the corners, the bird's nest will be triangular. The interior is unique. In addition, there are processed, strip-shaped and cake-shaped.
4. The smell is fishy: The natural Qiu Zi Yangshengtang bird's nest will have a slight fishy smell of egg white. After soaking in wet water, the fishy smell will be stronger. Fake bird's nest such as pigskin, because it is fried, it is difficult to hide its oily taste even if it is neutralized by protein. Others, such as seaweed, not only have no smell of bird's nest protein, but also have a strong smell of seaweed. However, some bird's nest processed with chemicals will smell of chemicals after stewing, so we should pay more attention.
5. Different colors: Because each swallow eats different foods, their saliva color will be different, so the color of each bird's nest in Qiu Zi Yangshengtang is different.
6. Beware of paint processing: Most of the high-quality Qiu Zi Yangshengtang bird's nest is plucked, and there are obvious gaps between silk. Although the denser the bird's nest, the better, but it is definitely not airtight. The painted bird's nest has a reflective and dense surface. It not only affects the quality, but also increases the weight of bird's nest.
7. Heavy hair: After soaking in water, the bird's nest in Qiu Zi Yangshengtang can be 3 to 5 times larger on average, which is comparable to the grade. It can even be 5-8 times larger. If the distribution process is done well, even good grades can be 1 distribution 10.
8, a small amount of young hair: after the bird's nest is sent, you will see a small amount of young hair. If it is found that there is no fine hair and it is extremely clean, it is probably washed by hand.
9. Light weight: The weight of a complete swallow cup is generally between 3 and 8g, and rarely exceeds 8g. If the bird's nest you choose exceeds this range, you should consider whether it is wet bird's nest or added other materials.