1. Bird’s nests generally need to be soaked for about 2 hours.

2. Bird's nests of different ages; the soaking time of bird's nests of different ages is different. The nests built by new bird's nests have thin silk and thin body, and absorb water quickly. Quickly, it can be soaked in cold water for 2 hours; the old bird's nest is large in size, has thick silk, and the overall thickness of the bird's nest is mostly more than 1 cm. This kind of bird's nest will take longer to soak in cold water. Hour.

3. Different picking techniques; generally speaking, the soaking time for bird's nests using the dry picking/semi-dry picking process is 2 hours, and the soaking time for bird's nests using the wet picking process is about 1 hour. The foam has opened.

4. Different bird’s nest parts; the bird’s nest sacs are thin and can be completely soaked and opened in 1-2 hours. The size of the shredded swallow is very small and can be soaked in 1-2 hours. The bird's nest plays a role in fixing the bird's nest, so the texture is harder, and the soaking time will be longer, about 3 hours. Therefore, the bird's nest must be torn apart halfway when soaking the whole bird's nest.