Breyers does not use castoreum and is safe for dairy consuming vegetarians.

What is the natural flavor in Breyers vanilla ice cream?

As the lawsuit tells it, however, the “natural flavor” in Breyers stems from “vanillin,” which is produced from non-vanilla bean components and should more accurately be designated as an artificial flavor.

Why does Breyers ice cream not melt?

Being labeled a frozen dairy dessert means that their products do not meet the FDA's standards to be considered ice cream. ... This change in ingredients may have made the ice cream smoother while also possibly taking away what makes ice cream melt.