You can find the recipe here.
My "fluffy white icing" did not become fluffy or white. I think it was because I made it with natural sugar instead of the plain white stuff and my shortening was slightly melty from it being so hot here in New Hampshire.
I could not find black cocoa powder, so I just used Dutch Processed and they came out fine.
My husband and I each had one and then gave the rest away to people at school. This was super duper sugary, but good. I don't think I would make them again.