u put 240ml (around 8.5oz) water and 6 spoons of milk power ... usually, i will pour around 2.5oz (or 2 oz) hot water and then add 2.5 oz water, then mix with 6 spoons of milk power, shake it, and then add the water up to 240ml.... so that the milk power can melt and the final milk is warm and can drink immediately.