If you prefer, substitute diet Coca-Cola or store brand cola. Keep in mind that diet Coca-Cola has a lower-freezing point, so it will freeze faster than regular Coca-Cola.
For an even easier variation, leave out the cherry juice and replace the regular Coca-Cola with Coca-Cola Cherry.
For thicker slurpees, add more ice a few cubes at a time. To thin your slurpees, mix in additional liquid soda.
The slurpees won’t keep in the refrigerator, but you can freeze the leftovers. When you’re ready to use them, just blend the frozen slurpee with a little liquid soda until it’s smooth.
The salt will lower the freezing point of the ice in the bag, which will make it even colder. This will help the slurpee mix faster.
Check the seal of the bag to ensure no soda is leaking.
The ice should be able to move easily around the bag of soda.
If you’d like to make a larger serving, make them in batches instead of doubling the amount of liquid in the bag. This will ensure that they freeze quickly.
