Soylent cow and pig:

http://www.kidzworld.com/article/727-how-jell-o-works

"The gelatin in Jell-O is made from the collagen in cow or pig bones and skins. Contrary to popular opinion, hooves and horns aren't often used to make gelatin. Manufacturers grind up these animal parts and use acid, and alkali chemical processes to break down the cellular structures and release the collagen. Next, the mixture is boiled. The stuff that forms a layer on top is gelatin."

Yum!

Jello history:

http://www.digitaldeliftp.com/LookAround/advertspot_jello.htm

http://www.nytimes.com/2008/05/04/nyregi...xprod=permalink