Online claims that foods commonly contain flavoring from beavers can make ingredient labels sound more alarming than they are. The substance behind the nickname is castoreum, a natural extract that can be used as a flavoring under the U.S. Food and Drug Administration's rules.
What is castoreum?
Castoreum comes from sacs near a beaver's tail and has historically been used in small amounts to add warm, musky notes to flavor profiles, including vanilla. Nutrition expert Scott Keatley says the aim is to add depth to a flavor--not to make food taste like beaver.
Is it common in food?
Castoreum is rarely used in food. Companies can achieve similar flavors with real vanilla or other flavorings, and the ingredient may be listed simply as "natural flavor" when it is used. That broader label can cover flavor extracts from a range of natural sources.
There is also an animal-sourcing consideration: commercial castoreum has often been obtained as a byproduct of the fur trade. But the viral suggestion that it is a routine ingredient in everyday foods is not supported by the information in the article.
Clearer understanding of flavor labels can help consumers make informed choices as food transparency continues to evolve.
