Start by pouring the water into a clean measuring cup. Then add the Everclear Grain Alcohol.
Add 3-4 drops of food coloring and stir.
Carefully pour the alcohol-water mixture into the bag until it’s about ⅔ full.
Squeeze out any excess air from the bag as you seal it to ensure the gel mixture is in contact with all sides of the bag.Lay the filled and sealed bag flat in the freezer. Allow the ice pack to freeze completely. The time required will vary based on the size of the gel pack and the temperature and contents of your freezer, but it usually takes a few hours.
When it thaws, place the ice pack back in the freezer to refreeze.
Notes
A 1:1 ratio of water to Everclear creates a soft but still icy consistency. For a more gel-like consistency, you can go as high as 2 parts Everclear to 1 part water.