Whether you should remove the sausage casing before cooking depends on your preference and the desired texture in your soup: Keep the Casing: If you prefer chunks or crumbles of sausage in your soup, you can remove the casing and break the sausage into smaller pieces while cooking. This method allows the sausage to disperse throughout the soup, providing bites of sausage in every spoonful. Cook with Casing: If you want the sausage to retain its shape and be sliced or diced in the soup, you can cook it with the casing on. Once cooked, you can then slice or dice the sausage into rounds or bite-sized pieces, adding them back to the soup.