Beaver anal secretions used as vanilla substitute
Both male and female beavers secrete Castoreum, which the FDA classifies as GRAS, or "generally recognized as safe."
However, you probably won’t see Castoreum on food labels — it’s typically listed as "natural flavoring."
The food additive is most often used in baked goods as a vanilla substitute, but it’s also been known to be used in alcoholic beverages, puddings, ice cream, candy and chewing gum.
It’s less commonly used as part of a strawberry or raspberry flavoring.
Although Castoreum can be used in place of vanilla, it’s not nearly as common as vanillin, the primary component of the extract of the vanilla bean.