1. Prepare the ingredients, 50g of shark's fin, 10g of green onion and ginger, 2l of water. take a clean and oil-free pot, soak the shark's fin in water for 24 hours.

2, another clean and oil-free pot, put the shark's fins and water boiled on high heat to low heat for 4 hours, turn off the heat and cool.

3. Take out the cooled shark's fins, soak them in water to remove the gelatin and sediment in the shark's fins, and rinse them again.

4. Add 2L of water, 10g each of shark's fins, green onion and ginger in the pot, cover and cook for 5 hours on low heat, turn off the heat.