How To Make A Rainbow Cake

I found such a cool recipe for rainbow cake on Omnomicon, and just had to post about it. It seems pretty easy to make. Two boxes of vanilla cake mix, some gel food colouring, jelly (American Jello), and Sprite Zero (instead of eggs, oil and water apparently!)

However, for those of you who do not use the same cake mix, and like me, are scared that the Sprite Zero might mess up the recipe, you can follow the instructions of the cake mix packet. Depending on the number of gel colours you have, divide the batter into equal parts.

Drop the colours, one by one, into the middle of the pan, in neat concentric-ish gobs. Remember the cake is going to be sliced in the side there, so mixing it around on top isn’t going to make your slices any more psychedelic (trust me, I did the three-dimensional thinking for you already).

When you’re three colours in, start doing the reverse with the other pan. Since I’m going in rainbow order: red, orange, yellow, green, blue, purple, I got from red to yellow in the first pan, then purple, blue, green in the second. This is so that your two pans are equal if your measurements aren’t exact (and they’re not likely to be).

Tips From Aleta

The gel colours, while not as good as pigment dye, are much bolder than the very liquidy food colouring you probably grew up with.

The first colour you drop into the pan, use about 2/3 of the mix for that colour. Otherwise, the top (last) colour will really dominate. I used a heaping1 cup of each colour.

For the frosting recipe, see Omnomicon or buy ready to use frosting – I LOVED the Devil’s Food frosting which is available in England – absolutely delicious, but I’m sure traditional frosting will be just as tasty.