2. Soak asparagus in water for a while, then rinse it off.
3. Remove the hard part of the root.
4. Boil a pot of water and add a spoonful of salt.
5. Pour the washed asparagus into the pot and cook for 1 to 2 minutes. Cook asparagus according to its size.
6. Put the scalded asparagus into ice water, cool and drain.
7. Pour the soy sauce, oyster sauce and water into the container and stir well.
8. Add 2 tablespoons of oil to the pot. After a little heating, pour the prepared juice into the pot and boil it.
9. Boiled juice can be evenly burned on asparagus.