One of the cool parts of my job at RadioShack is our partnership with Instructables and that bunch. They have how-to’s that show you how to make really fun stuff, including Glow Jello. Unfortunately, this doesn’t actually glow in the dark (cool as that would be), but it does, reportedly, glow under a black light, which is just as cool.
The key ingredient, apparently, is Indian tonic water, which contains quinine. The ingredients are:
- 150 ml gin
- 350 ml Indian tonic water (containing quinine)
- A splash of rose water (optional)
- 5 leaves of gelatine
You’ll also need a measuring jug, small saucepan, heatproof bowl, seive, and a jelly mold (preferably metal) . The full instructions are over at Instructables, but it seems easy enough.
It should be noted that there is a bit of a debate as to the health risks of ingesting quinine, but it sounds like a small amount won’t hurt you, so you’re probably good to go here.
This doesn’t really have anything to do with technology, but it is freakin cool. Why would you NOT want glowing jello?
Ricky Cadden 
Do you really want to eat something that glows? Don’t want that stuff flowing through my intestines and then coming out my bum. Curious, does it make your poo glow?
you know, that’s an excellent question, if it makes your poo glow. Hadn’t thought of that.