I make mine with 5 T Knox unflavored gelatin and added one packet of unsweetened Kool Ade and some Splenda. I did it in a 1 cup measuring cup, so it wasn't quite a cup of water. I put it in the microwave until it disolved. I pour mine into those cute little Jello jelly bean molds. They just pop out and I have a whole tupperware container to much on.

The gelatin is high in protein, no carbs and has some fiber in it!
It's easy to sit there an eat a bunch of those "jelly beans"