The practice is as follows:
1, soak the water chestnut in clean water for 30 minutes, and then wash off the mud on the surface and gaps of the water chestnut;
2. Cut the scallion into sections, slice the ginger, put the washed water chestnut into the pot, then pour the clear water into the water, add the scallion sections, ginger slices, pepper, star anise and fragrant leaves;
3. Cover the lid, and after the fire boils, change to medium fire and cook for 15 minutes.
4. Open the shell and serve.