To make ice cream in a bag, follow these steps:

Ingredients

• 2 cups heavy cream, half-and-half, or whole milk
• 1/4 cup granulated sugar
• 1 teaspoon vanilla extract
• 6-8 cups ice
• 1/3 cup rock salt

Equipment

• 1 small resealable plastic bag (quart or sandwich size)
• 1 large resealable plastic bag (gallon size)

Instructions

1. Prepare the ice cream mixture:
   In the small plastic bag, combine the cream (or milk), sugar, and vanilla extract. Remove as much air as possible and seal the bag tightly. Squish the mixture around to help dissolve the sugar

2. Prepare the ice and salt:
   Fill the large plastic bag about halfway with ice. Add the rock salt over the ice. The salt lowers the freezing point of the ice, which helps freeze the ice cream mixture faster

3. Combine and seal:
   Place the small bag with the ice cream mixture inside the large bag with ice and salt. Seal the large bag tightly, removing excess air to prevent leaks

4. Shake and freeze:
   Shake the bags vigorously for 5 to 15 minutes. You can squish and massage the small bag inside the large bag to help the mixture freeze evenly. To protect your hands from the cold, use gloves, a towel, or oven mitts

5. Check and serve:
   After shaking, the mixture should thicken into soft-serve ice cream. Carefully remove the small bag from the ice bag and wipe off any salt before opening it to avoid salty ice cream. You can eat it immediately or add mix-ins (like sprinkles or crushed cookies), reseal, and squish for a couple more minutes

6. Optional:
   For firmer ice cream, transfer it to the freezer for a few hours before serving

This method is a fun, quick, and easy way to make homemade ice cream without an ice cream maker