Originally Posted by dr. fager

that's very interesting....I assume it's the gelatin.

but...
The production of gelatin starts with the boiling of bones, skins, and hides of cows and pigs, a process that releases the protein-rich collagen from animal tissues. The collagen is boiled and filtered numerous times, dried, and ground to a powder. Because the collagen is processed extensively, the final product is not categorized as a meat or animal product by the federal government. Very strict vegetarians avoid gelatin entirely, but more permissive vegetarians have no problem including JELL-O in their diets.