Add the cream, vanilla extract, and sugar to a large Ziploc bag.Seal the bag well, removing as much air as possible, and swish the ingredients around.
In a separate bag, add the ice and salt.
Place the bag with the cream mixture inside the ice bag. Seal well.
Begin shaking the bags back and forth!Warning: You may want to wear gloves or wrap the bag in a towel, because it will get very cold!
Continue shaking for 7 to 10 minutes until the mixture hardens into an ice cream consistency.
Remove the ice cream bag from the ice bag. Rinse the ice cream bag under cold water to remove any salt residue.
Use a spoon or ice cream scoop to transfer the ice cream into a bowl.
Add any desired toppings (see some fun suggestions below!) and your ice cream in a bag is complete!
Video
Notes
Store any extra ice cream in the freezer in the sealed bag, or transfer it to an airtight container.
CAUTION: The bag will become very cold as you shake it. Wear gloves or oven mitts when shaking the bag, or wrap it in a towel. You can also pass the bag back and forth between two people.
Stir the ice cream well to get a smooth consistency. The ice cream in a bag has a soft serve texture to it. If you'd like your ice cream harder, place it in the freezer until it reaches a good firmness.