1) Fill the plastic jar about half full with crushed ice.
2) Add about 6 tablespoons of rock salt to the ice. Seal the plastic jar and shake the ice and salt for about five minutes. You’ll need to wear your gloves when you’re handling the jar. If you’re curious as to why you have to wear gloves, measure the temperature of the mixture with a thermometer. The rock salt and ice mixture gets down to about 14 degrees F (-10 degrees C)!

Steps for making ice cream