Tripett “Original Formula” is a grain free product consisting of nearly 100% Green Beef Tripe. Green tripe is the unbleached, nutrient rich stomach lining of a grass-fed animal containing essential fatty acids and digestive juices important for your pet’s health. Our Original Formula is known for it’s exceptionally high content of green beef tripe, and mixes nicely with dry and raw food. Good for all breeds and all sizes. Tripett. Feed well.