Joost Elffers began creating books in the early 1970's. Since then he has come up with really fun books full of imagination, like Oragami, Cat's Cradle, and Anamorphoses and the Games of Perspective. In 1978, he created his first fruit characters in Die Radieschen Maus im Kaseloch.
Since Joost is a foreigner, he was not too familiar with the Halloween tradition of carving out jack-o-lanterns. He was surprised to see that Americans never noticed the cute nose pumpkins already have-their stem. With his friend, Saxton Freymann, he started the book Play With Your Food