1. 6 beef balls, sliced rice-shaped knife, and a bottle of garlic oil for use.
2. Wash watercress and cut into sections.
3. Add a large bowl of beef balls to the pot and bring to a boil with cold water.
4. Bring to a boil and simmer for a while.
5. Scoop a tablespoon of garlic oil.
6. Add to the pot, cook for a while, add salt to taste.
7. Add watercress.
8. Add two more spoons of lard.
9. Press the watercress until it becomes soft and green.
