Have YOU ever heard of the paw paw? It’s the largest edible fruit native to the United States, and it used to be more well-known. Towns are named after it, including Paw Paw, Illinois. It’s scientific name is Asimina Triloba and it has other common names too: The custard-apple. The cherimoya. The soursop. And people who have eaten the paw paw say it’s delicious. Author and pawpaw enthusiast Andrew Moore set out to find out why more of us haven't heard of or eaten the fruit. His sleuthing is chronicled in his new book, "Pawpaw: In Search of America’s Forgotten Fruit."