play dough

We just made some fresh orange and yellow play dough...and this is how all of their toy cars and trains end up with play dough stuck in the wheels. Here's the recipe if anyone is interested:

1 3/4 cup water
3 T oil
Food coloring (about 15-20 drops)
2 cups flour
2 T cream of tartar
1 cup salt

Boil water, oil and food coloring. Add to dry mixture.Knead to remove lumps (be careful it's pretty hot). Keep in air tight container.