1 c cornstarch
2 c baking soda
1 ½ c water
Food Coloring and extracts for scents (optional)
Mix all ingredients in a sauce pan over medium heat, stirring constantly. Remove from heat when the mixture starts to look like mashed potatoes. The clay will thicken more as it cools. Knead and form into shapes!
This clay will air dry or can be placed in a food dehydrator or low temp oven to dry.
Source: Child Central Station