Cooked Play Clay

1 cup all-purpose flour
1 cup water
1/2 cup salt
1 teaspoon vegetable oil
1/2 teaspoon cream of tartar
Food coloring

In a medium-size saucepan, mix all ingredients. Cook over medium heat, stirring constantly. Cool until able to handle and then knead on a floured surface. Store in sealed container. This keeps for 2 to 4 weeks.