Galaxy Playdough - Fairy Dust Teaching 2 cups of plain flour 2 cups of water with black and blue food coloring 1 Tbsp. of cooking oil 1 Tbsp. cream of tartar 1 cup of salt INSTRUCTIONS: Mix liquid ingredients in a large pan. Begin to heat liquids. In a separate bowl mix dry ingredients. Add to the heating liquids. Stir until the dough gathers and thickens. Cook until it gets that sheen to it. Let it cool slightly and then knead to bring proper consistency. Store in plastic container.