I have an order for a sweet 16 party. They will have all black lights and glow necklaces and such. I was just talking to the mom and she said she needs to figure out a way to showcase the cake. So I thought about glow in the dark fondant. The cake will be all black with neon swirls on it. Anyone know if they make such a thing?

Not much help, but if they are using black lights, I would think a white cake would really glow. You could take a piece of white fondant and see how it does under a black light and see if she will change from black.

On one of the cake challenges on Food Network, one of the decorators used thinned down gel with tonic water. She applied it very lightly and it glowed in the dark.

I just googled "edible glow in the dark food coloring" and one of the sites is a thread from here with a link. Pretty cool.

Tonic water with quinine in it. It's the quinine that makes it glow in the dark. Practice painting some white fondant with gel that has the tonic water with quinine. btw, adding the tonic water to the gel makes it taste much better than it tastes without it.

I am going to try this for sure. Does anyone know how long this effect will last on fondant? If I do it in the morning when I am assembling the cake will it still work in the evening. I will try a piece and let it sit out/

One of my first cakes was for a sweet sixteen glow party and I would've love to have made the cake glow in the dark. Instead I opted for using glow sticks in, on and around the cake. Can't wait to see what you come up with!

Awesome thanks guys. I will try it this weekend and see how it works. I havent mentioned it to the customer yet, want to make sure it works but I am thinking she will love the idea for sure.