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Mint bread kvas.jpg
A mug of kvass
Alternative namesКвас, хлібний квас, kwas chlebowy (bread kvass), kvas, kvasz, kawas, cvas, gira, kali
TypeFermented non-alcoholic drink, sometimes of very low alcohol content – occasionally higher
Region or stateCentral and Eastern Europe, Baltic states, North Caucasus, Post-Soviet states, Xinjiang, Heilongjiang
Created byEast Slavs
Serving temperatureCold or room temperature
Main ingredientsRye bread, water, yeast,
sometimes flavoured with fruit, raisins, honey
VariationsFlavoured with fruit
Food energy
(per serving)
Circa 30–100 kcal

Kvass is a traditional fermented Slavic and Baltic beverage commonly made from rye bread, which is known in many Central and Eastern European and Asian[1][2] countries as "black bread". The colour of the bread used contributes to the colour of the resulting drink. Kvass's alcohol content from fermentation is typically low (0.5–1.0% or 1–2 proof).[3] It may be flavoured with fruits such as strawberries or raisins, or with herbs such as mint.[4] Kvass is especially popular in Russia.[5][6][7]


The word kvass is ultimately from Proto-Indo-European base *kwat- ('sour').[8][9][10] Today the words used are almost the same: in Belarusian: квас, kvas; Russian: квас, kvas; Ukrainian: квас/хлібний квас/сирівець, kvas/khlibny kvas/syrivets; in Polish: kwas chlebowy ('bread kvass', the adjective being used to differentiate it from kwas, 'acid', originally from kwaśny, 'sour'); Latvian: kvass; Romanian: cvas; Hungarian: kvasz; Serbian: квас/kvas; Chinese: 格瓦斯/克瓦斯, géwǎsī/kèwǎsī. Non-cognates include Latvian dzērsis ('beverage'), Lithuanian gira ('beverage', similar to Latvian dzira), Estonian kali, and Finnish kalja.


Kvass being fermented in a jar

Kvass is made by the natural fermentation of bread, such as wheat, rye, or barley, and sometimes flavoured using fruit, berries, raisins, or birch sap.[11] Modern homemade kvass most often uses black or regular rye bread, usually dried, baked into croutons, or fried, with the addition of sugar or fruit (e.g. apples or raisins), and with a yeast culture and zakvaska ("kvass fermentation starter").[12]


Vassiliy Kalistov, Street vending of kvass (1862), Chuvash State Art Museum, Russia

Kvass originated at the time of ancient Rus' and was a common drink in Old Russian Muscovite state.[13] It has been a common drink in Russia and other Eastern European countries since at least the Middle Ages. The drink is comparable to some other ancient fermented grain beverages including beer brewed from barley by the ancient Egyptians, the pombe or millet beer of Africa, the so-called rice wines of Asia, the chicha made with corn or cassava by the natives of the Americas.[14] Kvass was invented by the Slavs and became the most popular among East Slavs.[15]

The word "kvass" was first mentioned in the Primary Chronicle, in the description of events of the year 996, following the Christianization of the Kievan Rus'.[16] According to the Merriam-Webster Dictionary and Oxford English Dictionary the first mention of kvass in an English text took place sometime around 1553.[17][18] In times of Old Russia kvass developed into a national drink and was consumed by all classes. The peak of its popularity was the 15th and 16th centuries, where every Russian on average drank 200 to 250 liters of Kvass per year, from the poor to the Tsars. Already back then there existed many different kvass varieties: red, white, sweet, sour, mint, honey, berry and so on, with many different local variations.

In the 16th century first written records of kvass and kvass recipes appear in Lithuania.

In Russia, under Peter the Great, it was the most common non-alcoholic drink in every class of society. William Tooke, describing Russian drinking habits in 1799, stated that "The most common domestic drink is quas, a liquor prepared from pollard, meal, and bread, or from meal and malt, by an acid fermentation. It is cooling and well-tasted."[19]

Okroshka prepared with kvass

Apart from drinking kvass, families (especially the poor ones) used it as the basis of many dishes they consumed.[15] Traditional cold summertime soups of Russian cuisine, such as okroshka,[4] botvinya and tyurya, are based on kvas. A similar tradition is found in Romanian cuisine,[20] where the liquid used for cooking is made by fermenting wheat or barley bran and called borș.

Kvass was reported to be consumed in excess by peasants, low-class citizens, and monks; in fact, it is sometimes said that it was usual for them to drink more kvass than water. Slavic peasants, going to work in the field or other hard work, took kvass with them, as they believed that it restores strength and relieves fatigue.

In the 19th century, the kvass industry was created and less natural versions of the drink became increasingly widespread.[15] On the other hand, the popularity of kvass and the market competition led to the emergence of many varieties, which included herbs, fruits and berries. At that time kvass vendors called kvasnik (pl. kvasniki) were on the streets in almost every city. They often specialised in particular kinds of kvass: strawberry kvass, apple kvass, etc.[21][22]

Nowadays, kvass production is a multimillion-dollar industry, though it has been struggling ever since the introduction of Western soft drinks in Eastern European countries. Kvass was once sold during the summer only, but is now produced, packaged, and sold year-round.[23]

Modern Russia[edit]

A kvass street vendor in Belgorod, Russia, 2013

Although the massive flood of western soft drinks after the fall of the USSR such as Coca-Cola and Pepsi substantially shrank the market share of kvass in Russia, in recent years it has regained its original popularity, often marketed as a national soft drink or "patriotic" alternative to cola. For example, the Russian company Nikola has promoted its brand of kvass with an advertising campaign emphasizing "anti cola-nisation." Moscow-based Business Analytica reported in 2008 that bottled kvass sales had tripled since 2005 and estimated that per-capita consumption of kvass in Russia would reach three liters in 2008. Between 2005 and 2007, cola's share of the Moscow soft drink market fell from 37% to 32%. Meanwhile, kvass' share more than doubled over the same time period, reaching 16% in 2007. In response, Coca-Cola launched its own brand of kvass in May 2008. This is the first time a foreign company has made an appreciable entrance into the Russian kvass market. Pepsi has also signed an agreement with a Russian kvass manufacturer to act as a distribution agent. The development of new technologies for storage and distribution, and heavy advertising, have contributed to this surge in popularity; three new major brands have been introduced since 2004.[23] Kvass is produced in Russia in different flavors, matched to the taste of the different regions of Russia that prefer sweet kvass or the more sour variety. There are existing various versions of kvass, like for example red bilberry and cranberry.

Market shares (2014)[edit]

Company Brand name Share [%][24]
Deka/NiCola Никола 39
Ochakovskiy Очаковский 18.9
PepsiCo Русский дар 11.6
Carlsberg Group Хлебный край 5.5
Coca-Cola, Inc. Кружка и бочка 2.1
Other 22.9

Poland and Ukraine[edit]

Varieties of natural kwas chlebowy

Kvass may have appeared in Poland as early as the 10th century mainly due to the trade between the Kingdom of Poland and Kievan Rus', where it originated.[25] The production of kvass went on for several hundred years, as recipes were passed down from parent to offspring. This continued in the Polish–Lithuanian Commonwealth. It was at first commonly drunk among peasants who worked on the fields in the eastern parts of the country. This eventually spread to the szlachta (Polish nobility). One example of this is kwas chlebowy sapieżyński kodeński, an old type of Polish kvass that is still sold as a contemporary brand.[26] Its origins can be traced back to the 1500s, when Jan Sapieha – a magnate of the House of Sapieha – was granted land by the Polish king. On those lands, he founded the town of Kodeń. He then bought the mills and 24 villages of the surrounding areas from their previous landowners.[26] It was then that the taste of kvass became known among the Polish szlachta, who used it for its supposed healing qualities.[26] After the last Partition of the Polish–Lithuanian Commonwealth in 1795, Poland ceased to be an independent state for 123 years. Throughout the 19th century, kvass remained popular among Poles who lived in the Congress Poland of Imperial Russia and in Austrian Galicia, especially the inhabitants of rural areas.[26]

Production of the beverage in Poland on an industrial scale can be traced back to the more recent interwar period, when the Polish state regained independence as the Second Polish Republic. In interwar Poland, kvass was brewed and sold in mass numbers by magnates of the Polish drinks market like the Varsovian brewery Haberbusch i Schiele or the Karpiński company.[27] Kvass remained particularly popular in eastern Poland,[28] partly due to the plentiful numbers of Belarusian and Ukrainian minorities that lived there. However, with the collapse of many prewar businesses and much of the Polish industry during World War II, kvass lost popularity following the aftermath of the war. It also lost favour upon the introduction of Coca-Cola onto the Polish market.

Although not as popular in Poland nowadays as it is in neighbouring Ukraine, kvass can still be found in some supermarkets and grocery stores where it is known in Polish as kwas chlebowy ([kvas xlɛbɔvɨ]). Commercial bottled versions of the drink are the most common variant, as there are companies that specialise in manufacturing a more modern version of the drink (some variants are manufactured in Poland whilst others are imported from its neighbouring countries, Lithuania and Ukraine being the most popular source).[29] However, recipes for a traditional version of kvass exist; some of them originate from eastern Poland.[30][31] Although commercial kvass is much easier to find in Polish shops, Polish manufacturers of more natural and healthier variants of kvass have become increasingly popular both within and outside of the country's borders.[32]


Kvass trailer in Grodno (2019)

Belarus has a variety of kvass tasting and entertainment festivals.[33] The largest show takes place in the city of Lida.[34] Belarus has a handful of kvass breweries,[35] among which: Alivaria, the Olvi plc subsidiary Lidskae,[36][37][38] Khatni, the Brest Regional Executive Committee owned Brestskoye Pivo JSC,[39] and Krinitsa, which is an arm of the state-owned enterprise Belgospischeprom.[40] Khatni, which is brewed by the Oasis Group in partnership with Heineken, stresses that they ferment "according to the traditional recipe only using natural ingredients without colouring and flavouring agents."[41] Alivaria and Lidskae are also well-known beer breweries in Belarus with years of tradition and a visible presence on the Belarusian alcoholic beverages market.

Latvia and Lithuania[edit]

A kvass street vendor in Rīga (1977)
Kvass brands in Russia and Ukraine; and gira counterpart in Lithuania
Kawas served in a restaurant in Urumqi, Xinjiang.

After the dissolution of the Soviet Union in 1991, the street vendors disappeared from the streets of Latvia due to new health laws that banned its sale on the street. Economic disruptions forced many kvass factories to close. The Coca-Cola Company moved in and quickly dominated the market for soft drinks. In 1998 the local soft drink industry adapted by selling bottled kvass and launching aggressive marketing campaigns. This surge in sales was stimulated by the fact that kvass sold for about half the price of Coca-Cola. In just three years, kvass constituted as much as 30% of the soft drink market in Latvia, while the market share of Coca-Cola fell from 65% to 44%. The Coca-Cola Company had losses in Latvia of about $1 million in 1999 and 2000. The situation was similar in the other Baltic countries and Russia. Coca-Cola responded by buying kvass manufacturers as well as making kvass at their own soft drink plants.[42][43][44][45]

In Lithuania, kvass is known as gira and is widely available in bottles and draft. Many restaurants in Vilnius make their own gira, which they sell on the premises. Strictly speaking, gira can be made from anything fermentable—such as caraway tea, beetroot juice, or berries—but it is made mainly from black bread, or from barley or rye malt.


In the United Kingdom, kvass is practically unknown, as there are no cultural ties to it within the nation's history and there are no renowned kvass breweries in the country. However, with the influx of immigrants following the 2004 enlargement of the European Union, a number of stores selling cuisine and beverages from Eastern Europe cropped up throughout the UK, many of them stocking kvass on their shelves.[46] In recent years, kvass has also become more popular in Serbia.[47]

Kvass is consumed in Xinjiang, where it is known as kawas in Uyghur.[48]

Cultural references[edit]

Kvas is a surname in Russia and some other countries.[49]

The name of Kvasir, a wise being in Norse mythology, is possibly related to kvass.[50][51][52][53][54]

The Russian expression "Перебиваться с хлеба на квас" (literally "to clamber from bread to kvass") means to barely make ends meet, remotely similar to (and may be translated as) the expression "to be on the breadline".[55] To better understand the Russian phrase one has to know that in poor families kvass was made from stale leftovers of rye bread.[56]

In the Polish language, there is an old folk rhyming song. It shows the history of kvass in the country as having been drunk by generations of Polish reapers as a thirst-quenching beverage used during periods of hard work during the harvest season, long before it became popular as a medicinal drink among the szlachta. The words of the song go as following:[57]

Original Polish lyrics

Od dawien dawna słynie napój zdrowy:
kwas chlebowy,
pajda chleba za pazuchę,
bukłak kwasu
i chłop gotów w pole.
W gorącą posuchę.

English translation

A healthy drink has long been renowned:
bread kvass,
a chunk of bread below the armpit,
a goatskin of kvass
and the peasant is ready for the fields.
Into a hot drought.

In Tolstoy's War and Peace, French soldiers are aware of kvass on entering Moscow, enjoying it but referring to it as "pig's lemonade".[58]

In Sholem Aleichem's Motl, Peysi the Cantor's Son, diluted kvass is the focus of one of Motl's older brother's get-rich-quick schemes.[59]

Similar beverages[edit]

Other beverages from around the world that are traditionally low-alcohol and lacto-fermented include:


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External links[edit]