1. Comparison based on texture

1. Bird's nests are distinguished by "dense, fine, and sparse". The denser ones are classified as top-grade nests, and the sparser ones are classified as second-tier. wait. Generally, the calyx-shaped intact fibers are classified as first grade, and the calyx-shaped fibers are not compact and are classified as second grade.

2. According to the calyx shape, the calyx shape is complete and well-proportioned.

2. Comparison according to the color of bird's nests

Bird's nests can be divided into white bird's nest and blood bird's nest according to their color. Comparing the quality and price of bird's nests is actually very controversial. Many data show that the bird's nest of the first-stage white bird has the highest content of specific ingredients, and the difference between the two is not very different. However, because the production of blood swallows is very rare and has special texture and taste, the market price is sometimes slightly higher than that of white swallows.

3. Comparison by bird's nest type

According to the quality of bird's nest, they are divided into official bird's nest, feather bird's nest and grass bird's nest.

1. Official bird's nest: The first-stage bird's nest with a complete cup shape and few impurities is usually called "official bird's nest" or "tribute bird's nest". This kind of bird's nest is the most nutritious, has less impurities and has a good taste. There is also a traditional way of naming the first-phase high-quality white swallows as official swallows.

2. Feathered bird's nest: a bird's nest containing more bird's feathers, or a second- or third-stage bird's nest. The nutritional content is not as good as that of official swallow, and it has many impurities and is difficult to handle.

3. Grass bird's nest: a bird's nest built in the grass, mixed with a large amount of grass clippings, and has the worst quality.

Extended information:

Distinguish true and false bird's nests:

1. The weight of a single bird's nest rarely exceeds 10 grams. The weight of a single high-quality bird's nest is About 6 to 8 grams

2. There is no oil stain or mucus after soaking in water. 3. The shape of real bird's nest after cooking is like strips, with different lengths and thicknesses. Clumpy and irregular

4. The real bird's nest has a light protein smell after being cooked

5. The real bird's nest tastes smooth and tender after being cooked

6. The color of real bird's nest becomes swollen and translucent after cooking. Reference: Baidu Encyclopedia - Bird's Nest