<<Disclaimer: Verify this information before applying it to your situation.>> By popular demand: Play Clay recipe (as found on Arm & Hammer Baking Soda, Bicarbonate of Soda, sodium bicarbonate): 1 one pound box of baking soda 1 cup corn starch 1 1/4 cups cold water Stir together baking soda and Corn starch in saucepan Add water abd cook over medium heat until mixture reaches consistancy of moist mashed potatoes (approximately 10-15 minutes.) Remove and put on plate. Cover with a damp cloth. When cool enough to handle, pat until smooth. Sarah Rogers