Yes, here's how to make soybean milk with black beans, black rice and buckwheat.
main ingredient: 3g of black beans
auxiliary materials: 2g of black rice, 3g of buckwheat, and proper amount of water
Step 1: wash all materials for later use.
step 2: put all the washed beans and rice into the bucket.
step 3: add a proper amount of water.
step 4: press the double concentrated soybean milk button for 25 minutes.
step 5: you can drink the prepared soybean milk when it is filled out ~