I have eaten many things that i didnt know what was.
One thing i did know was octopus prepared in its own ink, served with spaghetti rice and bread. It was very good...if somewhat monochrome.
One of my favorite dishes is called "Øllebrød" (directly translated: "Beerbread) It is made by taking some bread, preferably Dark Rye Bread, and soak it in beer or a mix of beer and water. When the bread is almost totally disolved in the beer, you boil it and get a porridge like substance that is then sweetened with sugar. It is served with either milk, cream or my favorite; whipped cream .