1, the bird's nest is a filamentous structure, and the flaky structure is not a real bird's nest; Pure bird's nest is not completely transparent, but translucent, whether it is soaked or watched under the light.

2, bird's nest has a unique fragrance, but there is no strong smell. Anything with a special smell, fishy smell or greasy smell is fake.

3. Take a small piece of bird's nest and soak it in water. When it's soft, pull it with silk strips. Poor elasticity. If it is pulled, it is a fake. Rubbing with your fingers, those that are inelastic and can be rubbed into a paste are also fakes.

4. Light the dried bird's nest slices with fire. If it is a real bird's nest, it will never produce any violent splash sparks.

Authentic bird's nest is irregular and half-moon, about 6.5- 10 cm long and 3-5 cm wide. The side attached to the rock is flat, and the outside is slightly convex. The mucilage condensed layer on the attachment surface is orderly arranged and wavy, and the nest is rough and loofah-like. Hard and brittle, with a slightly horny cross section. It was soft and swollen when entering the water.

Extended data

Tips for buying bird's nest

1, choose Bai Yan.

After all, the selling point of bird's nest is high-quality protein, and blood swallow is only higher in mineral content. In addition, blood swallows are mostly dyed in the market, so it is recommended to choose Bai Yan. Blood swallows are mostly bleached and dyed. Bai Yan doesn't give blood swallow nutrition, so there's no need to take risks.

2, not greedy for white

Pure natural white bird's nest is not without a small number. Most of them are gray-yellow, normal bird's nest, even the same batch of goods will have color difference, even a lamp has color difference. Therefore, choosing bird's nest that is not too white can avoid the risk of bleaching.

Step 3 choose thin bird's nest

The bird's nest painted with glue/paste will be thicker, not easy to dry or fragile. Add other substances to increase weight. Not all natural bird's nests are thin, but choosing thin bird's nests can avoid the risk of "feeding". The normal dry swallow cup is 4~8 grams.

People's Network-Tips for Quickly Distinguishing True and False Bird's Nest