@_bellabakes guide to royal icing (and how you can colour it with Colour Mill 👇🏽🌈) 1) Decide which colors you want to use for decorating, and divide the royal icing into as many bowls. Mix in your food coloring until you've achieved the colors you like. Tip 🚨 When using Oil based food coloring only add a very small amount! This means you will only be able to achieve lighter pigment shades. If you add too much it will change the consistency of your royal icing. 2) Piping Consistency should be stiffer and be the texture of toothpaste when squeezed through a piping tip. You can achieve piping consistency by adding more confectioners' sugar, 2 tablespoons at a time, to a soft peak frosting. Keep adding until the peaks in the frosting hold stiff on their own. 3) Flooding Consistency is a looser consistency of icing, more like the thickness of shampoo or honey. Make your royal icing according to the recipe, but then add water, 1 tablespoon at a time, until it drips from a spoon in a thick stream.