Look, I was well into my late 40s before finding out that LUTEFISKE was that awful fish concoction the school cafeteria's dished up on Fridays ~ back home in Indiana.
Although there's no large, well known, self-identifying Scandinavian group in Indiana, the Danes dominate Indianapolis and environs well enough to impose this stuff on everybody else.
If you ever find yourself dining out in New Zealand....... don't order the White Bait!