1. Rinse the pig’s lungs with clean water, cut them into pieces, make them bigger, and make them smaller if they are cooked.
2. Put it in a basin, preferably a larger basin, I’m a small one, put in salt, and wash with your hands. Then rinse with water.
3. Add the washed pork bones and blanch them together.
4. After blanching, wash away the floating powder.
5. Wash green olives and cut in half.
6. Put all the ingredients together in a saucepan, add water and simmer together for about 1 hour. Just add a little salt to taste.
