Hi Lana/Chocolate Lady,
Did you ever have success with this product on Chocolate? It is appealing to me because I am having trouble finding a good product that is also certified Kosher. I am looking for an item that would allow me to add some color to dark chocolate products w/out using white chocolate that I have colored. I think this could do the trick but its hard to find a picture w/ a sample.
Chef Rubber might have a kosher-certified luster dust that is FDA approved. One way to apply is to mix with melted cocoa butter and decorating the insides of the molds.
I never did get around to trying them. It looks as though Sugarcraft is the maker of these 'Crystal Colors'. The sugarcraft website states that there is no lead or any other metals in the product - they are just made from US certified food colors.
I don't know how they compare to the ones at Chef Rubber or the PCB ones at Qzina. Chef Rubber doesn't list ingredients that I can see... The PCB ones contain iron oxides which apparently are inert - although they are described as toxic at high doses. Iron Oxides are banned for consumption in Germany.
It's a bit of a head scratcher... Good luck with your search!
The stuff I get from QZINA is certified Kosher--blessed by Rabbi Schlessinger himself.
I'd still love to know what is in that stuff..........