How are cow beef byproducts in jello?

There are no cow beef byproducts used in Jello. Jell-O is a trademarked brand of gelatin-based desserts, initially produced in 1897 by Pearle Wait. It is currently manufactured by Kraft Foods. Jell-O is made with gelatin, which is a protein obtained by boiling skin, tendons, ligaments, and/or bones with water. Gelatin can be derived from different animal sources, including cows, pigs, and fish. However, the gelatin used in Jell-O is primarily sourced from pigs, not cows.