Baking is as much about presentation as it is taste. When you bake that special birthday cake, you aren't just asking yourself if you should bake a chocolate cake, a white cake or some other flavour. How the cake will be decorated is also a consideration. If you need orange food colouring for the icing, the shade may not be available, so you need to turn to the colour wheel and see what colour combinations will make orange.
Squeeze 1 ml (1 drop) of red food colouring into a bowl.
Add 2 ml (2 drops) of yellow food colouring to the bowl. Stir with a toothpick to mix.
Add more yellow if you want a lighter orange, or more red for a darker orange. If you are colouring icing, then add a little of the mixture to some icing to test the shade (before adding more red or more yellow) as the colour in the bowl may not reflect the true shade.
Add orange juice to white icing if you want to make light orange icing.
Combine ground turmeric and beetroot juice to make orange food colouring, if you don't have red and yellow food colouring. Go very light on the beetroot juice.
If too much red is added, then it will be difficult to lighten the shade once it is added to the icing without adding in more white icing.