No, the casings of red sausage are generally made from pig intestines, so they are edible.

Pig casing refers to a transparent film formed after the pig intestines are processed and scraped, and then torn into mesh-like, very fine fibers by hand. This kind of fiber is protein fiber. Because it is made up of a crisscross network, it has strong longitudinal and transverse pulling forces. It is a very thin coating on the outside of sausages or sausages. It is suitable for both manual enema and Suitable for machine filling. The sausages filled with pig casings do not stain, and the fillings of the sausages can be seen with the naked eye, giving people a clean and hygienic feeling, which can increase appetite, and will not change flavor or deteriorate within a certain period of time. They are very convenient for storage, carrying out and dining. convenient.