1. Prepare old soup
2. Dried tofu cut into strips
3. Boiled water
4. Soak black and green beans for 8 hours.
5. Put the old soup in a rice cooker and add dried tofu.
6. Add black and green beans.
7. Press the button to start cooking for about 40 minutes
8. Add a little salt and the MSG can be out of the pan.
9. It is delicious and delicious when served on the plate.