You need:
Ice cubes (or smashed icicles and/or snow)
½ cup kosher salt
1 cup half-and-half (or low fat milk)
2 tablespoons sugar
½ teaspoon vanilla extract
1 resealable heavy sandwich bag
1 gallon-sized resealable freezer bag
Dish towel
What to do:
1. Fill the gallon-size bag half full with ice. Add kosher salt.
2. In the sandwich bag, mix half-and-half, sugar, and vanilla. Seal tightly.
3. [...]
