I just tried a rambutan - which was delicious a cousin of lychee both exotic fruit of South America.
I wonder where to get some more, since this was brought in by someone at work.
It tasted similar to lychee, and I opened it with a paring knife exposing it's smooth delicious insides. Looks like it's rich in manganese. I don't have it's full nutrition profile but I am sure it's great to enjoy along with other fruits and vegetables.