Someone sells casings. You can buy it in wet markets and Taobao. Usually the casings used for enema are scraped from the large and small intestines of pigs.
When filling sausages, the choice of casing is very important. Generally, people choose to use pig small intestine or sheep small intestine when making enema casings. Then there is the question of whether to use dry or wet casings.
Actually, both are the same. After buying the pig intestines, you only need to remove the white oil on them and then clean them, and then you can use them. You don’t need to scrape the meat. Dry casings are easier to store, so wet and dry casings still depend on specific needs.
Knowledge related to casings:
Casings are animal products made from scraping the large intestine and small intestine of livestock. It is mainly used as a coating for stuffed sausages and enema; sheep casings can also be made into gut string, which is used to make tennis racket strings, bow strings and surgical sutures.
Casings are divided into pig casings, sheep casings and cattle casings according to animal types. According to the parts, they are divided into large casings and small casings. The intestine is divided into 4 layers from the inside out: mucosa, submucosa, muscularis and serosa. According to the different requirements of animal types and processed products, the processing of the upper four layers is also different. Good quality casings should be tough and translucent. What is emerging now is collagen edible casings.