Here is the recipe if you would like to try it at home.
Large Ziplock bag
Small Ziplock bag
3 cups of ice
6 tbsp of ice
1/2 cup of whole milk
2 tbsp sugar
1/4 tsp. vanilla
Add milk sugar and vanilla together in the small zip lock bag. Zip tight and place larger zip lock bag with the ice and salt around it.
Shake.....Shake.....Shake........