Our bird nest are traditionally selected using tweezers, the process must be dyed / sprayed with RO (Reverse Osmosis) water so it is easy to pull out the feathers, the splinters and the outgoing fibers will be separated from the nest during the lifting of the feathers. Then the flakes will be processed with traditional sieving to become pure yansui. Feet and treads are not combined because they are harder at the time of cooking. therefore our yansui product is pure from the fibers and the flakes. Below are the process that we use to produce high quality Broken Swiftlet Bird Nest.