Home made play dough : With 5 ingredients, you can make some house made play dough. Mix with a spoon the artificial food coloring, put it in a casserole. Add some flour, some salt, some corn flour and 2 spoons of olive oil. Cook it gently, by mixing with a spoon until the paste becomes difficult to mix. It is ready ! if you want to keep it for a few days put it in the fridge in an aluminum foil.