This portable ice cream shaker needs no power supply.What it does need is only few cups of ice.Shake it and it starts to freeze.You are not just buying a ice cream maker.You are buying "SCIENCE".Just put in ice,salt and water.shake it until the container freeze.
Salt
When salt contact with ice, it Lowers the temperature from 0° Clecius to -10° to -17° Clecius
Ice need more energy in order to melt.
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