1, boil the pig fat into clear oil, and boil the pig fat into black and yellow, and the oil can be crystal clear. Add some soy sauce below, it tastes delicious and thick. 2, the production method of spiced soy sauce, soy sauce with star anise, fennel, fragrant leaves, cinnamon, pepper, put in a pot to cook, to prevent paste pot. When it is done, it will become the following ingredients. 3, mushroom soy sauce: mushrooms and soy sauce, straw mushrooms, tea tree mushrooms and so on. It can also be made into soy sauce.