A Russian fermented drink, made from rye, can contain alcohol, but is also in soda form.

If you ever drink it for the first time, be sure to at least eat some rye bread 2 days before you drink kvas. Otherwise you can get some diarrhea.
John drank some kvas from that new Russian shop, but he wasn't used to rye bread. He first whined 2 hours about his stomach that hurted, after that he shitted whole day on the toilet.
by zortaw August 3, 2012
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The lockers at the high school had signs on them that said, "Go Amanda - KVA" because the soccer team was playing Valpo that night.
by QWERTY1 November 15, 2006
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