4. Ackee
This is probably one that few of us have heard about. It comes from West Africa and is relative to the better-known lychee fruit which is used in Asian cuisine. Once Ackee is fully ripened, it should be no problem to eat, but eating it before that time may expose you to poison that can kill. It is reported to have killed 23 people and sickened almost 200 more in Jamaica in 2011, but if you are still hankering to try it, it can be purchased in some locations frozen or canned.