[Kitchen Witch]

You would have to experiment on your own on that - I've never tasted it from CF. But the commercial mixes are different than the boxed cakes in the stores. You can try the sponge cake or make your own homemade (we have tons of cake recipes on site for you to choose from. I would first make a homemade white cake recipe that uses all egg whites, a nice velvety cake. And of course I would even try it with a sponge - just for curiosity.

Please let us know how it turns out for you.

PS - I am a KW - but I've chosen to be a nice one. (called that all my life - brought up in the kitchen - loooonnggggg story)