[older]

> Try buying kvass in Norway!

Easy. I've bought it in Kiwi in Hemsedal (Ulsåk) several times, for example. All Eco Market shops in Oslo as well (run by Ukrainians/Poles btw).

[vintermann]

You definitively can't get kvass on your average Kiwi. I can't even get it my local Spar or Mega. But there are always odd exceptions (my local Mega pushes mochi heavily for some weird reason).

Immigrant shops are your best bet, it's true.

[older]

My local Spar has "east european foods" shelf. There's no kvas, but a lot of other good stuff though.