[mcv]

That's why I didn't include it in the normal words. It is absolutely cheating.

As for the spelling: https://nl.wikipedia.org/wiki/Borsjtsj

(Edit: That page also mentions a soup called 'sjtsji'.)

[wwwhizz]

I stand corrected, I didn't know you could spell it that way. What a weird language we have :)

[toxik]

Your weird uncle Swedish spells it perhaps even worse, borsjtj. https://sv.wikipedia.org/wiki/Borsjtj