LEM Products Collagen Edible Casings - Edible Collagen Casings take the place of using natural hog or sheep casings. These beef protein casings can be used for fresh, cured, or smoked sausages. There is no preparation necessary; just put them on your stuffing tube and before you know it, you will have uniformly sized sausages! Made from beef protein One strand is approximately 50' Ready to use. No soaking needed No added sodium Store in an air tight container, or heavy plastic bag, in a cool dry place.