One simple playdough recipe calls for 1/2 cup salt, 1 cup flour,1 tablespoon cream of tartar, 1 tablespoon oil, 1 cup water, food coloringCombine ingredients in a saucepan. Heat gently, stirring all the time. When the dough has a good consistency, take it off the heat and allow to cool. Voila! Play Dough that you can trust is not harmful to your kids.