Collagen casings are also edible, but they may not be as palatable as natural ones. You can usually identify fibrous casings by their deep, red color, but keep in mind that they can also be clear.

Artificial Casings Market by Type (Collagen Casing, Cellulose Casing, Plastic Casing, Fibrous Casing, Vegetarian Casing), Application (Vegan Sausages), Distribution Channel (Online), End User ...