When considering how much milk can be produced from 1kg of soybeans, the amount will depend on various factors such as the quality and type of beans used, the method of processing, and the desired fat content. However, on average it is estimated around 2-4 liters of milk can be made from 1kg of soybeans. Therefore, depending on the desired outcome, producers may need to adjust their methods accordingly in order to meet their required quantity and quality.