I just did a cake a few weeks ago with black foil underneath. I meant to put a piece a parchment paper between the cake and foil but I completely forgot. Rookie mistake, I know.
I flipped out about it for a while, because it was a wedding cake and I didn't remember until it was almost completely finished. By then I didn't have time to start over. I made myself sick worrying about it...actually sick!
But then my husband (voice of reason) reminded me about all those little tricks of the trade that require non-FDA approved things. :shock: For example, how do you smooth your buttercream? I read a whole thread about different things we use. High density foam paint rollers, Interfacing fabric for sewing, Computer paper, etc. I'm pretty sure none of those are FDA approved, either. (BTW, I've tried all of them...I like paper towels the best.)
We should absolutely be careful and try to follow the FDA guidelines, but I'm not spending any significant amount of time flipping out about it....uh..anymore.
Amanda
ps...nothing happened. No one got sick, the cake didn't turn the color of the foil, nothing. But, lesson learned, I don't think I'll ever forget the parchment paper again!