My spelling may not be precise, but what about lutefisk?
IIRC, lutefisk is a Norwegian comestible.
I lived in Green bay, WI many decades ago. The term “smorgasbord”, with & without umlauts, described the menu of almost any buffet-style restaurant or dining room in the local area.
It was the last time I ordered and enjoyed frog legs (delicious, as I recall).
See my post 6. We had it every Christmas Eve, but, as I say, my grandparents grew up in Sweden in the late 1800s, so that may be an older Swedish custom that is no longer practiced there as much.
Then again, I've never had a Swedish Christmas. I'm Jewish so we had a normal dinner at my grandparents, the one time we were freezing in a Malmo winter. We just had meatballs made with beef and chicken, instead of pork and veal schnitzel searved with lingonberries, pickles, and potatoes.
(Sniffle. I miss my mormor and morfar.)