2. Mix flour, salt and dry yeast, and add hot water and olive oil.
3. Mix all the ingredients evenly to form a smooth dough. Put it in a closed container and let it stand for about 30 minutes to ferment.
4. Wash the white mushrooms and slice them. Take out the dough, divide it into two parts, roll it into a round cake (the diameter is only about 19cm), and then let it stand for about 15 minutes. Heat the pan, add green onions and white mushrooms and stir-fry for a while, then add shrimp and clam meat, stir-fry for 5-8 minutes at medium temperature, and season with salt and pepper. Slice the cheese. Brush the pizza with ketchup and spread with shrimp, clam and cheese slices.
5. Preheat the oven to 200 degrees Celsius, then put in the pizza and bake for about 20 minutes.