How about some of our southern food like Poke Salad - Elvis sang a about Poke Salad Annie. I looked it up and apparently its made from a native plant that if you don't prepare it properly is poisonous!
Or another southern favorite of my husband is buttermilk pie. I think gizzards are gross but I know lots of people just love 'em.
From my side of the family I know about ludefisk (spelling? from Sweden) but I don't eat it - yuck!