In parts of Asia, bird's nest soup is a delicacy made from the nest of swiftlets, small swift-like birds. What are these nest made of?
Answer Bird saliva
Bird's nest soup is made from nests that swiftlets make from their spit. The difficulty in harvesting the nests and their small size make it one of the most expensive things consumed anywhere in the world.
Asked by Todd Curtis · Last updated 4 weeks ago · 8.3K views