Of course milk is good, but everything is to consider the cost. Normal 1kg ice cream powder to do ice cream, need 3kg water, if all with milk, you calculate the ice cream milk cost 3 * 4 = 12 yuan, plus 1kg ice cream powder price of 15 yuan, the cost is 40. The first thing you need to do is to get your hands on some of the most popular products and services in the world, and you'll be able to do that with the help of your own personal computer.