Octopus

Just about anything would be good, but I would avoid things that people are commonly allergic to like shellfish and nuts.

Jalapeno

Chocolate

Red Bell Pepper

White wine

Butternut Squash

Pomegranate!! It's very trendy right now and it can be used in a lot of different ways. Or you could try a different type of grain that few have tasted. You could use quinoa or even something a simple as aramanth. Get creative!! (Plus some of these are much cheaper than octopus)

Eggplant

My son and I did an imprompteu iron chef challenge and "Parsley" was the secret ingredient. We used it on scallops, pasta and you could use it in a variety of ways - like a garlic/parsley/breadcrumb herb crust on lamp chops or something.

We have fun with guessing it and making fun of it too. How about the secret ingredient is.....:

Mint

Sourdough Bread (rounds, baguettes, sliced....)

eggs

dairy (milk, butter, marscipone cheese, cream cheese, buttermilk)

hamburger

crackers

Sounds like fun.

You really want something that has several variations to it: like APPLES, with sweet red and tart green apples. ... If it's going to be in the Fall, apples are good, and so are SQUASH (butternut, acorn, pumpkin, etc). ..... CORN (sweet yellow corn, white corn, popcorn, corn on the cob, cornhusks, cornmeal, corn tortillas)