half & half

sugar

salt (rock salt is best)

flavored extract such as vanilla (optional)

ice

1 small Ziploc bag 

1 large Ziploc bag

oven mitts/towel

Into the small Ziploc bag add:

• 1 cup of half & half 

•  1 Tbs sugar 

• 1/2 tsp flavored extract (optional)

Remove the air from the small bag and zip closed

Fill the large bag halfway with ice and add 1/4 cup salt

Place the small bag inside the large bag and close

 Using oven mitts or a towel, shake the bag for 5 or 6 minutes

Remove the small bag, rinse off the water and ice, and dry

Open the small bag, stir, and enjoy!

Be sure to clean up and put away your items. Good scientists clean up after every experiment.