1. Ingredients: pork trotters, appropriate amount of sweet corn, 5 slices of ginger, one spring onion, seasoning: salt, a little chicken essence.

2. Prepare the ingredients, wash the pig trotters and cut them into pieces, wash and cut the sweet corn into sections and set aside.

3. Take a clean pot, add appropriate amount of water and ginger slices to boil, add pork knuckles and blanch them to remove the odor and set aside.

4. Put the cooked pork knuckles in a stew pot, add an appropriate amount of water and ginger slices, and bring to a boil over high heat for about 10 minutes.

5. Skim off the foam, add sweet corn, bring to a boil, then reduce to simmer and continue simmering.

6. Cook for about 2 hours. The pork knuckles are cooked until tender. You can add salt and chicken essence and turn off the heat.

7. Add the minced green onions after the pot is cooked.