The Slavs have known bread kvass for over a thousand years. It is known that the Eastern Slavs owned recipes long before the formation of Kievan Rus. The first mention of kvass in Russian written sources dates back to 989: after baptism, Prince Vladimir I Svyatoslavich ordered that “food, honey and kvass” be distributed to the people. They also knew how to cook kvass in Poland and Lithuania. This unusually tasty drink will become your favorite! The composition of kvass includes many essential trace elements and vitamins, namely: B vitamins, calcium, phosphorus, magnesium, lactic acid, and amino acids. The drink has an excellent sweet and sour taste, pronounced aroma and delicate foam. Great for hot summer days.