1. In the sandwich-size bag add milk, sugar, vanilla & strawberries. Squeeze air out & zip closed.
2. Put ingredients bag into the quart-size bag & zip closed to prevent leaking.
3. In the gallon-size bag add ice & salt. Place sealed ingredients bags into the ice bag, squeeze air out & zip closed.
4. Shake 5-10 minutes or until ice cream reaches desired thickness.
5. Scoop into bowls & serve immediately or store frozen up to 2 days.