One of the world’s most expensive foods is made from saliva

Posted on Posted in Science News

From caviar (fish eggs) to truffles (an edible fungus), it seems that many of the world’s most expensive foods are made of dubious substances, and bird’s nest soup is no exception. The soup, which is an expensive Chinese delicacy, is made from a particular kind of nest that is created by bird saliva. While many of us would be reluctant to shell out for saliva, the bird nests that form this soup are one of the most expensive animal food products around.

http://uk.lifestyle.yahoo.com/7-shocking-food-facts.html

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