1. Put the beef in cornstarch, soy sauce, oil, ginger and marinate for a few minutes
2. Wash the lettuce leaves and set aside
3. Put an appropriate amount of water in the bell and put it in a boil
4. After boiling, pour in the washed lettuce leaves
5. The fire is boiled again
6. After the lettuce leaves are boiled, add the marinated beef and boil again
7. One minute after boiling, the beef is cut off. Add salt to taste and it will be out of the pan.
Tips:After the water is boiled, the beef can be boiled for one minute, it will be very hard after cooking for a long time
