How to prevent food colouring changing the taste of food? I am a keen baker with a big sweet tooth. I often use coloured icing and sponge when I bake, but often the colouring I use changes the taste of the icing/sponge. 

Does anyone know how to prevent the food colouring changing the taste of food or how I can minimise it? 

The food colouring I use is: Dr Oetker
If you use the same Dr. Oetker colouring that I have used in the past, which is advertised as a 'gel' colouring, then you have to use a lot to get a good intense colour.

You may have better results (colour and taste-wise) getting proper concentrated gel food colourings, like those made by Wilton. You need to use much less than cheaper brands so you don't run the risk of flavouring the food, and you can even use them in meringues without ruining the structure.