All Sam's Yams are made from orange fleshed, sweet potato- also known as yams. These chews are highly nutritious and excellent for your dog’s teeth and health. Sam’s Yams are made only of human food quality, fresh sweet potato and nothing more. The trick is in the patent pending drying process, where the sweet potato is transformed into a chew that has characteristics similar to rawhide or jerky. Basically, a vegetable rawhide-like chew!