The best playdough recipe ever

1 c. flour
1/2 c. salt
2 tbsp. oil
1 c. water
2 tsp. cream of tartar

Mix all the ingredients together in a medium pot and cook over medium heat, stirring often.  The mixture will get all lumpy and gross looking but will come together after 4 to 6 minutes and form a ball.  Let it cool then knead in food coloring if desired.  This makes a very soft, nice feeling dough.  It lasts forever if you store it in a baggie or container.