When it comes to pigs, it can be said that they are all treasures. From meat to bones to internal organs, from beginning to end, nothing is inedible. In addition, people in different places in the same place have developed different cuisines. For example, in the north, ordinary spiced pork is often used for barbecue or cooking hot pot, while in the south, it is mainly used for braising or braising. Even pig hair that we don't eat can be used to make brushes.
when it comes to "pork", there is really a piece of meat on the pig that no one eats, which is also the "only" piece of meat on the pig that cannot be eaten. This piece of meat is the pancreas of a pig. From the pig lungs and heart in the chest to the liver, stomach, intestine and even bladder in the abdominal cavity, different delicacies can be made, but no one eats pig pancreas. From a professional point of view, the pancreas of a pig is also a kind of "meat". The main ingredient is also protein. It's okay to eat it. Why hasn't anyone eaten the meat of our ancestors yet? Because in ancient times, pig pancreas was more useful than eating.
In the past, when the chemical industry was not so developed, there were not so many washing powder, liquid detergent, soap and facial cleanser. Some of them are natural ingredients such as Gleditsia sinensis. Wash the Gleditsia sinensis and boil it in water. Boiling water is an ancient "liquid detergent". When washing clothes, one thing is used for washing clothes. Gleditsia sinensis is mainly distributed in southern China. This is not common in the north. Northerners need a material called "pig pancreas", which is made of pig pancreas. Until now, the old people in my hometown still call soap "pancreatic juice".
it is not difficult to make soap from pig pancreas. Clean up the grease on the surface of the pig pancreas, then clean up the meridians in the pancreas, and finally sprinkle an appropriate amount of alkaline flour on the surface of the pancreas, then beat the pig pancreas repeatedly with tools until it becomes sticky and mushy, and then stir the beaten pancreas in one direction with chopsticks until it can't be stirred. At this time, it is already a semi-finished product of pig pancreas. Finally, knead it into various shapes by hand, which can be round or square in the mold, and then dry it in the sun for about half a month. This "soap" is made from pig pancreas.