This sounds like fun! But what I don't understand it was you put in it to get thiobromide (SBr-)in the icing? Anyway, I don't think its toxic. Unlike the Fe(CN)6 {ferricyanide) I scored from lab yesterday :) But I only grabbed it because its a lovely red-orange crystalline powder.

Someday, you will have to teach me how to bake. I'm fine with things *on top* of the stove, just not *in* it :/