In its early years, this edible product was advertised with cherubic figures originally designed by Rose O'Neill known as Kewpies.  
Patent medicine hawker Pearle Wait added flavor to this product, which was first invented by Peter Cooper of Cooper Union fame.  This product was then mass-marketed by the Genesee Company.  In its early years, this edible product was advertised with cherubic figures originally designed by Rose O'Neill known as Kewpies.  Norman Rockwell illustrated a multi-lingual cookbook for this product which emphasized its ability to help immigrants assimilate.  It's not Grapenuts, but (*) Jack Benny was a long-time spokesman for this product.  A "recipe on the box" of this product in the '80s encouraged you to use cut-outs to make jigglers.  A museum for this product in LeRoy, New York demonstrates how materials such as calves' hoods are used to make it.  For 10 points, name this desert often fashioned into salads and for a long time advertised by Bill Cosby.
Patent medicine hawker Pearle Wait added flavor to this product, which was first invented by Peter Cooper of Cooper Union fame.  
Jell-O [or gelatin desserts]