1. Clean the container. First clean the inside and outside of the container. If it is not clean, the beans will rot or even not germinate.

2. Choose beans. Pick out beans that have bug eyes, are black, and have less than full grains.

3. Wash the beans. Rinse the picked beans.

4. Soak beans: Put the washed beans into a clean, oil-free container, add water to about 8-10 cm above the beans, and soak for 10 hours.

5. Wash the beans. Pour away the water in which the beans are soaked, and wash the beans again with running water.