And Swedish egg coffee.

Which funnily is absolutely not a thing here in Sweden.

First time I heard about "Swedish egg coffee" from American colleagues I was really puzzled, had to do some research about it because I never heard or seen it. It seems to come from some Swedish immigrants to the USA that used eggs instead of fish skins to remove impurities from coffee.

Wait, so swedish fish coffee is the real deal?

In the 19th century, for sure!

Interesting! I first saw it at a state fair in the US. They mentioned Swedish immigrants too, but didn't say whether they invented the technique.

I was skeptical but...it's actually great.

Yes, that's also where the french dessert canelé comes from: the egg whites being used for wine filtering, you have a lot of yolks left. So instead of wasting them, they were/are used to make canelés.