Baking Powder Substitute?
Do you have any idea if this could be made without baking powder? Or if there is something you could substitute for it? I am making a birthday cake this weekend for a severely allergic little boy (no gluten, dairy, eggs, nuts, soy or corn) and I can't use baking powder due to the cornstarch. Right now I'm just glad I found an organic powder sugar that used tapioca starch instead of cornstarch, but I still need to either find an acceptable baking powder substitute, or find a recipe that doesn't need it.