What is the effect if you brush lustre dust onto buttercream without mixing it with vodka, extract, etc?
Thanks!
Bankruptcy 
Only half kidding--you'd use an awful lot of it before you'd get much of an effect. I just don't think it would flow, or spread, smoothly.
You could probably "dust" it on buttercream by putting a small amount in a clean nylon knee high/pantyhose foot and just tap the pouch of dust while going around the cake. It wouldn't be good for "spot" application.
Just my .02
Rae
Thanks for the help! I'm doing a test cake this week with the lustre dust and I may try the pantyhose idea....Thanks again!
Also, any tips on "painting" an entire cake iced with buttercream with lustre dust to give it that all-over sheen or metallic-like look?
Mmmm...a whole cake, huh? I've done gold highlight accents on buttercream using real 24K gold dust and lemon extract. It was tricky because even with the extract and a light touch, the buttercream was prone to dimpling and changing shape. With fondant, you can go over the same area several times to get out streaks, etc. I don't think you'd have that luxury with buttercream. I'm afraid that on large areas you'd get lots of "start and stop" areas that couldn't be readily repaired.
I guess to try it, you'd need to have the buttercream super smooth, use a wide, soft brush, clean the brush often because it will pick up sugar particles from the icing and lead to lumps of color and "scratches" in the icing, and be prepared to go over the cake several times. I'd also advise doing it on the cake before putting on any borders or decoration.
Good Luck!
Rae
Thanks for the tips! I'm going to practice this weekend and I'll report back. 
)
Julie
Well, I tried airbrushing the lustre dust on the entire cake. I mixed the dust with everclear & the application was no problem. However, I wasn't too pleased with the results. I tended to emphasize ALL the imperfections of my imperfectly iced cake. But it was fun using the airbrush! Ha!
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