For each serving you will need:
1 resealable sandwich bag
12 ice cubes
1 quart-sized resealable bag
1 tsp vanilla
1 cup whole milk
1 tbsp sugar
2 tbsp salt
Pour milk, vanilla, and sugar into small bag and seal. Put ice
cubes, and salt into a big bag, add a small bag and seal. Shake the bag,
but don’t drop it. In about 10 minutes you should notice crystals
forming. When it reaches soft-serve consistency, scoop into a bowl
and serve immediately.
References / Source:
GSLC Pow Wow 2008