Follow these simple steps to whip up your homemade ice cream:

1. Mix the Ingredients
   In a small bowl, combine the heavy cream, milk, sugar, and vanilla extract. Stir the mixture until the sugar dissolves completely, ensuring a smooth texture.
2. Prepare the Smaller Bag
   Pour the mixture into a quart-sized zip lock bag. Make sure to seal the bag tightly, removing as much air as possible to prevent any leaks during the shaking process.
3. Prepare the Larger Bag
   In a larger zip lock bag, fill it halfway with ice. Add the salt to the ice. The salt will help lower the freezing point of the ice, facilitating the freezing process of the ice cream mixture.
4. Combine the Bags
   Place the smaller bag containing the ice cream mixture inside the larger bag with the ice and salt. Seal the larger bag tightly.
5. Shake, Shake, Shake
   Shake the bags vigorously for about 5-10 minutes. You’ll notice the mixture thickening into ice cream. It’s a fun and physical activity that kids and adults alike will enjoy.
6. Finish and Serve
   Carefully remove the smaller bag from the larger one. Rinse it briefly under cold water to remove any salt residue. Open the bag, and your homemade ice cream is ready to enjoy!