William Schrafft manufactured sweets, and is the first ever to advertise jelly beans as jelly beans, back in 1861. He advised mothers of Boston to send these candies to their children, away from home.
Jelly beans travel well, and are not harmed by being sat upon. This recommends them to Rhinos, who don’t usually examine a place before sitting. And they retain their sweet essence for a Long Time.
Very successful, jelly beans!