My 14-year-old son’s Exotic Fruit Challenge: Guyabano or Soursop. It’s also known as custard apple, guanabana, and Brazilian paw paw. Soursop is the fruit of Annona muricata, a broadleaf, flowering, evergreen tree. The exact origin is unknown; it is native to the tropical regions of the Americas and the Caribbean and is widely propagated. It…

