Premium. Grade A. Ultra-pasteurized. Naturally easy to digest. Foil lined premium pack keeps fresh longer. Pure-twist cap. Twist & pour. Naturally gluten free. cfburger.com. Keeps fresh longer. Recyclable only where facilities exist. Visit recyclecartons.com to see if recyclable in your area. Periwinkle 100% Natural Goat's Milk is ultra-pasteurized, - a specialized heat treatment process that assures a fresh, long-life dairy product when properly refrigerated. No artificial preservatives are used in this process. Then it's placed in our exclusive foil-lined carton that provides a super-strong, light-tight barrier to seal in the freshness and flavor. And to prolong that freshness, each carton has a convenient, resealable Pure-Twist cap. All Star Dairy Association medallion quality. About Goat's Milk: Goat's milk is a 100% natural food product. Both nutritious and delicious, goat's milk is easily and more thoroughly digested because of its small, soft curd. This milk is non-homogenized. All of the milk in this container comes from only grade A goat dairy farms in the USA.