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Gelatin is a yellowish, odorless, and nearly tasteless substance that is made by prolonged boiling of skin, cartilage, and bones from animals. It's made primarily from the stuff meat industries have left over â we're talking about pork skins, horns, and cattle bones. Ugh. Related.
Gelatin (the main ingredient in jello) IS made from the boiled bones, skin, ligaments and tendons of cows and pigs slaughtered for meat.The collagen (oily substance) is extracted, then it is dehydrated into a powder or sheet of gelatin.es, jello and many other sweets, candies, food, and medicines contain gelatin which is made out of crushed collagen usually extracted from animal (mainly pig) bone.