2. soak kidney beans 4 hours in advance and wash them.
3. Soybeans are also soaked and washed in advance.
4. Wash the two kinds of beans and pour them into the soymilk machine.
5. Add 900 ml of water.
6. Plug in the power supply of the soymilk machine, and select the "Five Grains Pulp" function key.
7. In about twenty minutes, the soymilk machine makes a ticking sound, and the soymilk is ready. If you like sweet, you can add some sugar before eating.