|Rainbow cake slice|
|Pastel rainbow cake, unadorned|
White and yellow cake concepts are American. White cake using only egg whites and yellow cake, well, you've guessed by now.
I added a hint of vanilla to everything, the icing is similar to Billy's vanilla buttercream, which I have used successfully before on cupcakes.
|Pastel raibow cake, in all its glory|
I read online that people used gel or paste food colouring to get the best results. I bought a bottle of pink gel and used only liquid food colouring for the other layers. I held back a little of the liquid in the cake recipes and everything went fine. Note that this is a pastel cake, so that didn't need as much colouring as a vivid rainbow. I brought the McCormick colourings back from New York and they come with a guideline for achieving colour tones that I adapted to my recipes.
|Rainbow cake, minimalistic|