There are so many types of dusts out there, luster dusts, petal dusts, pear dusts, and on and on. Can someone please tell me which ones work the best and which ones can be consumed? Also, do any work to mix into buttercream so that when you pipe scrolls they will look metallic?

TIA

There is a handy Sticky thread located near the top of this forum filled with great info on dusts.

Here's the link:
http://forum.cakecentral.com/cake-decorating-ftopict-54059.html

HTH