Recipe Snobs created these unique cupcakes that will actually glow under a blacklight:
The key step was discovered when a particular snobbette was faced with a dilemma of having to add enough tonic water into her cupcake frosting without making it too runny or peculiar-tasting. After finally reaching an agreeable consistency that would glow in the dark, she was dismayed to find that adding any sort of food coloring to the frosting prevented it from glowing.
The solution? She placed the frosted cupcakes in the freezer until the frosting hardened, then dipped them in liquid gelatin made with tonic water. Voila!
Click the link below to check out the recipe.