Clean the freshwater snails thoroughly and set aside.
Cut the zucchini, onion, green onion, and spicy green chili into bite-sized pieces.
In an earthenware pot, add soybean paste and water and bring to a boil.
Once the paste has dissolved, add the freshwater snails and minced garlic.
Add zucchini, onion, and chili peppers, then bring to a boil again.
Add tofu and green onion, and simmer once more.