1. Remove the grease from the sheep lung trachea and expose the trachea mouth.

2. Put the trachea mouth on the water pipe mouth, open the faucet valve, and inject clean water into the sheep lung through the trachea of the sheep lung.

The sheep lung has been perfused several times. This is a sheep lung filled with water, which has expanded several times.

4. Then put the sheep lung full of water in the basin, let the water in the sheep lung slowly seep out and take away the blood in the lung. After the sheep's lungs contract, fill them with clear water, and then let them slowly ooze clear water. After three or four gastric lavage, the dirty things and blood in the sheep's lungs will be removed, and the sheep's lungs will become clean.

5. The sheep lung treated in this way is clean and sanitary, and the treated sheep lung is cooked with water together with other sheep offal.

6. Cooked lamb lungs are crisp, clean and hygienic, and can be used as cold salad or mutton offal soup.