I want to set up a stall to sell soybean milk in the morning. How to make soybean milk?

The specific method of soybean milk is as follows:

The materials that need to be prepared in advance are: soybean 150g, appropriate amount of water and 20g of rock sugar.

1, soak the soybeans one night in advance.

2. Pour the soybeans into the soymilk machine.

3. Add the right amount of water.

4. Then start the soymilk function of the soymilk machine.

5. Pour the cooked soybean milk out of the filter residue.

6. Finally, add a proper amount of rock sugar and stir until it melts.

7. In this way, the soybean milk will be finished.