I thought I knew fruit, I mean really knew fruit until I went to Costa Rica. My wife planned an excursion on a small 2 acre family owned business that was fruit and cocoa. 

It was one of the most incredible 2 hours of my life, these guys were experts on fruit, knowing EXACTLY when to pick it and how to serve it. 

One that isn't available in the United States (too fragile) was Soursop and a few others I can't even remember. Incredible is all I can say.