1 c. flour
2 tsp. cream of tartar
2 tbsp. vegetable oil
1 c. water
1 drop of food coloring
1/2 c. salt

Mix dry ingredients thoroughly. Add food coloring to the water and oil and stir into dry ingredients. Stir over medium heat several minutes until mixture forms a ball. Let cool in bowl, then knead until smooth. Store in an airtight container. The playdough will keep four to six weeks and will lose its greasiness after the first or second use.