1 Tbsp sugar
1/2 cup milk or half & half cream
1/4 tsp vanilla
6 Tbsp rock salt
1 pint-size Ziploc plastic bag
1 gallon-size Ziploc plastic bag
Fill the large bag half full of ice, and add the rock salt. Seal the bag.
Put milk, vanilla, and sugar into the small bag, and seal it.
Place the small bag inside the large one and seal again carefully.
Shake until mixture is ice cream, about 5 minutes.
Wipe off top of small bag, then open carefully and enjoy!