Source Castoreum is a yellowish, strong-smelling secretion that comes from the castor sacs found near the base of a beaver’s tail. It’s an FDA-approved food additive, and hey, you can now get whiskey that’s flavored with the stuff.
That knowledge comes courtesy of this piece from Food & Wine’s Mike Pomranz, which spotlights a nice little beaver musk whiskey made by Tamworth Distillingof New Hampshire. Fear not, castoreum is an FDA-approved food additive. That’s actually how this spirit came about. Tamworth’s team was looking to develop a new spirit, and in hopes of securing a speedy all-clear from the Alcohol And Tobacco Tax And Trade Bureau, they went straight to the FDA’s list of ingredients that are already considered safe. Castoreum understandably caught their attention.