Sidewalk chalk homemade recipe

Sidewalk chalk can be expensive especially if you have multiple kids. I decided I wanted and needed to cut expenses so I refuse to buy anymore when I can make my own. All it took was 1/2 cup corn starch and 1/2 cup of water and mixed it well. Then I just added two drops of food coloring. I have a stick mold for ice that I never use so this will be my mold for my chalk from now on. It literally took less than five minutes to mix etc. I still don't know how long it will take to harden cuz I just made it. Let me know if you decided to create your own sidewalk chalk as well. Happy Fourth of July everyone.