2. Boil the soaked spareribs in a pot for one minute, so that all the excess foam floats off the spareribs, then take out the spareribs and wash them with clear water, pour out the oil and water in the pot, add clear water, add the spareribs and boil them over high fire (if there is foam, please repeat this step).
3. Continue to cook for five minutes after the fire boils, add proper amount of vinegar (according to personal taste), then turn to medium fire 15 minutes, add onion, ginger and pepper for medium fire 12 minutes, and add proper amount of salt, chicken essence, monosodium glutamate and thirteen spices at the end of medium fire.
4. Turn to low heat for 5 minutes after medium fire, put coriander in the pot, and the fragrant sparerib soup will be ready.
5. Before putting the coriander, you can remove the onion, ginger and pepper, which is easier to eat.