4 cups flour, 2 cups salt, 4 cups water with food coloring in it, 2 tablespoons + 1 teaspoon cream of tartar, 2 tablespoons cooking oil, saucepan.
Mix together the flour, salt, water, food coloring, cream or tartar, and cooking oil in a large saucepan. Cook over medium heat, stirring constantly. Cook until the mixture forms a large 'ball' and pulls away from the sides of the pan. Remove the ball from the heat. Once it is cool to touch, knead it until it is smooth. Your playdough will then be ready for playtime or it can be stored it in an airtight container for future use.