Liberal Dictionary English Dictionary
noun
- a Russian beer made from fermenting rye or barley and having a dark color and sour taste.
noun
- an alcoholic drink of low strength made in Russia and E Europe from cereals and stale bread
Russian fermented drink made from rye or barley, 1550s, from Russian kvas “leaven,” from Old Church Slavonic kvasu “yeast,” cognate with Latin caseus “cheese” (see cheese (n.1)).