I always have trouble getting my icing to be jet black..any suggestions?
Start with a deep chocolate icing, if possible, and make sure to let the icing sit awhile to let the color deepen!
Either that, or airbrush/paint black on top of your icing once it's on the cake. I'd do that for larger areas anyway.
Your answer is Americolor - super black! It hardly takes any at all and it will be JET, SUPER, DARK, BLACK! =o)
I have to agree with Cylstrial Americolor... I just bought the super black for a cake I was making and WOW... It took very little to actually get a good black color.