Wash the ribs and simmer them into a medium size. Wash the onions and ginger for use.
Put the water in the pot, add a few pieces of ginger into it, a small amount of cooking wine, put the ribs in, wait for the water to open.
After the water is opened, remove the ribs and rinse them out with tap water (the advantage is that the soup is clear and has no odor). Put the pot with clean water, add onions, ginger, clams, cooking wine, a small spoonful of vinegar. Put the cleaned ribs together. After the fire is boiled, turn to medium heat and slowly stew. After roasting, turn off the heat and add salt.