The correct way is to fill the pig's lungs with water, let them swell, and then squeeze out the water hard, which needs to be repeated many times, so that the dirty things inside can be discharged more effectively.
Until the boiled water of the pig lung turns white, then you can cut the pig lung into blocks and clean it with flowing water. If you buy it and cut it directly into blocks for cleaning, you can't clean it anyway.
prepare a clean pot, put the pig lungs in after adding water, and cook with strong fire so that the blood in it can be removed. After cooking, take out the pig lungs, add water, and wash them again and again, so that they can be washed more cleanly. The boiled pig lungs can be washed in cold water, so that some floating foam can be removed by using the principle of expanding with heat and contracting with cold, and washed more repeatedly.
To clean the pig lungs more cleanly, first put the pig lungs on the tap, then squeeze out the water after the large and small blood vessels are filled with water, which needs to be repeated many times until the lungs turn white, and then knead them with some white vinegar and salt, put them in a pot and boil them to soak out the dirty things inside.
Then wash it again until it turns snowy white, and you can put it in the pot for cooking. Add some clear water and boil it with strong fire. At this time, there is a lot of blood foam. Turn off the fire after the boiling changes color, and then pour it out and rinse it with clear water. Generally, after these procedures, you can clean the pig lungs.
It's best to have an introduction.
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