1. Accessories: one tomato, 10 dried chili peppers, a large piece of rock sugar, a tablespoon of peppercorns, 2 star anise, a green onion, seven ginger slices, a bottle of beer, a tablespoon of vinegar , one tablespoon of soy sauce, one tablespoon of salt, one tablespoon of tomato sauce, one tablespoon of cooking wine, and a few bay leaves.

2. First, remove the head and internal organs of the herring, cut the onions into sections, slice the ginger, and dice the tomatoes. Use kitchen paper to absorb the water, put oil in the pot, and fry on both sides over low heat. When golden brown, add green onions, ginger slices, dried chili peppers, rock sugar, peppercorns, and star anise.

3. Then add diced tomatoes, tomato sauce, soy sauce, cooking wine, beer, tomato sauce, bay leaves, and bring to a boil. Then pour it into the pressure cooker and press it for an hour.

4. Put it in the pot over high heat to harvest the thick juice, put it in a box and put it in the refrigerator to eat the next time for more flavor.