play dough

2 cups flour
1 cup salt
2 tablespoons alum
1 cup water
2 tablespoons oil
liquid food coloring

Pour dry ingredients into large pan. Stir together to mix. Stir oil and food coloring into the water. Pour liquid into the dry ingredients while mixing, squeezing and kneading the playdough. If too sticky, add more flour. Keeps best in the fridge.