Things You'll Need
Black food coloring, liquid
Ivory food coloring, paste
While your local supermarket only sells basic food coloring sets, you can easily make any color you need by mixing the colors together. Gray food coloring is impossible to find at the grocery store, but is made easily at home. Mix it with frosting and create your own gray animal cakes, like wolves, mice or even seals and whales.
Place 1 tbsp. of ivory food coloring paste into a small bowl.
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Add one drop of liquid black food coloring to the ivory paste.
Whisk the two colors together until combined.
Add additional black food coloring, one drop at a time, and whisk again to make a darker gray color.
Lighten the gray by adding more ivory paste. Continue to whisk the colors together until you are satisfied with the color.
To color white food such as mashed potatoes or cake frosting, simply add a drop or two of black colorant to the food.