According to that entry, it appears in both Swedish and Czech (as an alternate spelling).
Given the commenter's username is krokku and the fact that "krok ku" means "(a) step forward/towards" in Czech, I think we can assume that the commenter is Czech.
https://en.wiktionary.org/wiki/kvasar
According to that entry, it appears in both Swedish and Czech (as an alternate spelling).
Given the commenter's username is krokku and the fact that "krok ku" means "(a) step forward/towards" in Czech, I think we can assume that the commenter is Czech.