How do you make dark green frosting black?

You can make dark green frosting black by adding black food coloring.

Method for Achieving Black Frosting

Starting with green frosting is an effective way to achieve a deep black color. As mentioned in the provided reference, making green icing first and then adding black coloring can significantly reduce the amount of black color needed compared to starting with plain white frosting.

Here’s the simple process:

1. Start with Green Frosting: Begin with your existing dark green frosting.
2. Add Black Food Coloring: Gradually add high-quality black food coloring to the green frosting. Gel or paste food colorings are typically recommended for vibrant colors and are less likely to affect frosting consistency than liquid colors.
3. Mix Thoroughly: Mix the coloring into the frosting completely. Continue adding small amounts of black coloring and mixing until you achieve the desired black shade.
4. Let it Sit (Optional but Recommended): For the deepest black, allow the colored frosting to sit for some time (e.g., 30 minutes to an hour). Colors, especially dark ones like black, often deepen as they sit.

Utilizing green as a base color works because green already contains some dark pigments, providing a head start in neutralizing the white base of the frosting, thus requiring less black dye to reach a true black hue. This technique is highlighted as an easy way to create black icing using "a lot less color."