comes from an ancient recipe of the people of the Himalayas that is used by the locals to create a long-lasting snack that they can slowly work in their mouths while they are working in the fields. . In the mountains at more than 15,000 feet, it is made using traditional methods with Yak and Cow Milk and all natural products and no chemicals or preservatives.This is a very long lasting dog chew that you can find. Dogs must work the end of the treat for hours, softening it with their mouths before small parts of it can be slowly scraped off. It is 100% natural with no preservatives. It is an authentic type of cheese eaten by the people of the Himalayas. When you give this chew to your dog, you know that you are providing them with hours of high quality eating entertainment.