1. Prepare fresh day lily, remove the flower core and root of the fresh day lily. Wash the day lily and soak in water for about 15 minutes.
2. Boil the day lily in boiling water for about 3 to 5 minutes. Drain the day lily and set aside. Pour out the boiling water.
3. Boil the soup again with water, add two tablespoons of oil, a little white pepper, and a proper amount of salt, add mustard and tofu.
4. Add day lily, boil it, add monosodium glutamate and start the pot.
