1. The white shells I bought are kept in sea salt water for a day to let them spit out sediment impurities
2. Prepare loofah
3. Peel the loofah and cut into pieces with an oblique knife
4. Heat the fragrant ginger in a pan and pour some water
5. It's boiled, poured into the clean white shell
6. Cover the big fire and burn the white shell
7. Pour the loofah
8. Double the ingredients in the pot with a spatula, try to soak the loofah in the water, cover and cook for 2 minutes
9. The color of the loofah turns to emerald green, and the state becomes soft nowadays, coriander, and then can be out of the pot
