Rinse the beans and soak in water at room temperature for 6 hours (or in a refrigerator overnight)
Drain the beans and add to the instant pot
Rinse the rice and add to the instant pot. Add clean water to cover the bean and rice. About 0.5 inch above the surface
Cook under pressure for 50-60 mins. Unplug the power and cool down to room temperature. Mix vigorously to blend beans and grains well.
Transfer the mixture to the glass bowl, and get the walnuts and seasame ready.
Put about 5oz of the bean/grain paste, 1 tbsp of seasame, and 2 tbsp of walnuts into a zip bag. Store all the packed bags in refrigerator for future use
Take one bag, and add the mixture to the bleander. Add boiled water and mix at high speed for 60 seconds.
Pour out the smoothie and serve with other items
Video
Notes
Black beans could be replaced with regular soybeans.
Black rice could be replaced with brown rice or multi-grains
Walnuts could be replaced with other nuts
You can add black sugar, honey, or raisins for additional flavor