Caviar

Caviar is the preserved roe, or eggs, of fish. In Europe, only the roe of certain species of Eurasian sturgeon processed in a special manner can legally be called caviar. In North America, the term is also used to describe the roe of other fish, provided the type of fish is specified. For example, the processed roe of Great Lakes whitefish may be called whitefish caviar. However, when a container is simply labeled caviar, its contents must be Eurasian sturgeon caviar and have no other ingredient except salt.