DIY Ice Cream in a Bag

DIY Ice Cream in a Bag is the perfect activity to make any day exciting. With just a few simple ingredients, children can create their very own delicious frozen treat that is not only fun to make but also satisfying to eat. There is actually a lot of interesting chemistry that goes on behind making ice cream. For example, think about how you start out with refrigerated (or room-temperature) ingredients and then need to cool them down to turn them turn into ice cream. How do the ingredients change during this process? How important do you think it is that they are cooled to a certain temperature? In this science activity, you will make your own ice cream in a bag and explore the best way to chill the ingredients to make them become a creamy delicious treat!


  • 1 small zip lock bag + 1 large zip lock bag
  • 1/2 cup milk
  • 1 tablespoon sugar
  • 1 tablespoon vanilla essence
  • 1 tray of ice cubes
  • 6 tablespoons table salt


In the SMALL zip lock bag, add the milk, sugar and vanilla essence.

In the LARGE zip lock bag, add the ice and salt.

Put the small zip lock bag into the large zip lock bag with the ice & salt.

Ensure zip lock bags are well sealed.

shake the bags all around until the milk mixture is hard or looks like mashed potato.

Once you’ve mastered Ice Cream in a bag, experiement with flavours and toppings!