1, sausage casings can be divided into two types, one is natural and the other is artificial. Natural casing is the use of animal intestines, of which pig intestines are often used. But if you use pig's small intestine, you should pay more attention to it clearly. Not only should it be cleaned, but the mucosa inside should also be cleaned, otherwise the smell will be bad.

2. However, some people say that the sausage casing is very thin, which is not the same as the pig small intestine. In fact, the outer layer of the casing was removed during the production process. Without the outer layer and the inner layer, the middle layer is really thin. It is more troublesome to make casing, but it tastes healthier and more hygienic.