Now take a wild guess what these batches of color will become. Don't think you will be able to but amuse yourself by not scrolling down right away.
Well I must say this is so crazy I thing I have to try doing this. Showed it to Björn and said he would get it for his next birthday and he looked at me like I had gone nuts. I think, I will spare him the ordeal to pot the knife in the cake and find it this way. But still it's a lovely thought. :)
You can find the recipe at The Omnimicon and it's called the Sunny Rainbow Cake. Hope you enjoy it as much as I did.
Lots of love