What is a food that is not well known that you think will be the next big thing?!
Answers: Jicama - so good cooked or raw, in salads, main dishes or cocktail garnishes. ;-)
papaya
Tofu.... although well known, most men have never had it and if left to them never will (unless they were tricked into having a meat flavored version of it, worked on me).
For some reason (pre-programming), ego is trumping logic here...
mushrooms