Korean soy sauce (sold in supermarkets) and Chili sauce (the ratio of the two is 2: 1)
Accessories: others can be according to personal preference.
Boil with rice water, skim off the froth, and add Korean soy sauce and Chili sauce in turn. When the water boils again, add tofu, zucchini, mushrooms and your favorite vegetables to boil, and add clams to boil.