do horse hooves make up jello
Posted on September 28, 2012 by Mark. No, they are not. Gelatin is a principle ingredient in marshmallows. A lot of people believe that the gelatin in marshmallows is made from from horse hooves, but that isnât true. You canât make marshmallows out of horse hooves; however, you can make glue out of horse hooves. Hoof glue was invented in ancient times and has been in continuous use for over 5,000 years. Horse hoof glue is still made. It is used in fine woodworking and violin making, among other things.