I know that in Lithuania, they drink lightly salted water: https://www.kaina24.lt/s/vytautas-mineralinis-vanduo/

So while I don’t doubt your taste buds, I think it’s a cultural thing whether a bit of salt in water tastes bad 😄

It is up to the shops whether they want to accept euro or not (or any other currency), but the official currency is kroner. I know that some supermarkets (Netto) used to gladly take euro in exchange for a horrible exchange rate

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