You need to add ginger to remove the fishy smell

The recipe of green olive and pig lung soup is as follows:

Ingredients: 15 green olives, 1 pig lung, lean pork 100 grams of meat, 50 grams of coriander, 2 to 3 slices of ginger.

Wash the olives and soak them briefly; wash the coriander;

Put the throat of the pig lung on the water pipe and pour water into it. When it is full, drain the water out of the lung with your hands. Squeeze it out, wash the pig lungs several times, wash them with cornstarch, rinse them with water, and cut them into cubes.

Put them and the ginger into a large stew pot, add 1500 ml of cold boiled water (about 6 bowls of water) and simmer for 3 hours. Add an appropriate amount of salt and a little oil.