Traditional Eastern European non-alcoholic beverage, brewed using malt and sourdough bread. Good for the guts and is very refreshing.

Kvas is a fizzy, sweet-sour and thirst quenching beverage made with sourdough bread, barley malt and water. The sweet and sparkling sensation of the beverage is extremely refreshing, making it an ideal companion for hot summer day barbecues, or in restaurants paired with burgers, steaks, pork chops or Asian hot pots. The content of just 2.5 grams of sugar per 100 ml makes our kvas a solid choice to go for, if you are looking for something healthier than cola, but tastier than water to drink.

Two tastes, two characters

Live Classic


Made of sourdough bread and barley malt. Has a dry, strongly acidic taste, with hints of rye bread and dried plums.

Shelf life: 3 months

Live Semi-sweet


Made of sourdough bread and barley malt. The addition of birch sugar makes it taste more fresh and lighter than the Classic. Mildly sour with an aftertaste of mint and cherries.

Termin przydatności: 3 m-ce

Kvas origins


According to legend, kvas was invented by accident around the 10th century in Eastern Europe: one night, a storm swept through a town and a wind gust damaged the roof of a local bakery. The next morning the owner of the property found that all his stored bread was completely soaked with water, which at first caused him great distress. When he was evaluating the damage done by nature, he found that the wet bread started to ferment and secreted a distinct flavor. As the bread was no longer edible, the baker decided to leave the loaves in water and see what would happen next – that’s how the first kvas was pioneered.

Only natural ingredients

As with all other 1000 Lakes products, kvas was made with only natural ingredients: sourdough bread, malt, water and sugar. The amber-caramel color occurs naturally, no colorant was added. The residues of rye and barley on the bottom of each bottle prove the product was crafted using wholesome ingredients.

Meat's best partner

Feeling sluggish after eating too much meat? A bottle of kvas will alleviate the discomfort after a heavy meal. The sparkling, sweet, sour sensations neutralize the greasy aftertaste of meat, also the lactic acid bacteria present in the kvas promotes digestive functions and develop digestive health. Apart from that, the sweet-sour taste goes perfectly well with sizzling meat dishes.  


Why is our kvas more expensive than others?

The heart of our kvas is sourdough bread, which is a type of bread requiring the longest time to prepare. A mixture of flour and water is mixed in the right proportions and sits for 4 days. During this time, the flour begins to ferment, spawning lactic acid bacteria here and there. Lactic acid bacteria is found naturally in human bowels and is crucial for our gut health; they are also responsible for the sour taste and carbon dioxide in the drink. 4 days later, the sourdough is ready, formed into bread and baked. From here, the bread lands into the brewing cauldron, together with water, malt and sugar. Once brewed, it matures in the cold-room for 10 days. As you see, the production process takes at least 2 weeks to complete.

In comparison, most of the kvas found on the market shelves is made with malt concentrates and lemon juice; carbon dioxide needs to be artificially pumped into the bottle, because no fermentation process occurred throughout the production process. As a result, it doesn’t contain any lactic acid bacteria in it. This kind of product can be produced within 1 day.

You may sometimes find home-made kvas from yeast bread at farmer’s markets in Poland. The difference between yeast bread and rye sourdough bread is that yeast bread can be made in 3 hours, while sourdough bread needs no less than 4 days to make. In the end, sourdough bread has a higher concentration of beneficial bacteria and is more nutritious – it’s the nobility among probiotic drinks.

Any contraindications to drinking kvas?

Diabetics can consume the beverage in moderate amounts. Each bottle contains 2.5 grams of sugar per 100 ml; the main ingredient is rye bread, which has a glycemic index of 50 to 60. The product contains gluten.

Does it contain alcohol?

Kvas is a product of fermentation and that means it has trace amounts of alcohol in it. Our kvas contains 0,3% alcohol on average, thus it qualifies as a non-alcoholic beverage. 

Is it safe for children and new moms to drink?

We don’t recommend giving it to children under 2 years of age – allow children to develop their microbiome in their natural rhythm. Apart from that, it’s safe for underage and new moms for consumption. Our kvas is low in sugar, provides probiotic bacteria, vitamins B, zinc, magnesium and iron. Moms-to-be shall drink cautiously, because kvas is a fermented product and that means it has trace amounts of alcohol in it, just like kefir, pickled foods, vinegar or sourdough bread. In case of doubt consultancy with a doctor is highly recommended. 

Isn't kvas from Russia?

Yes and no. It originated somewhere on the terrains of today’s Belarus and Ukraine, but in medieval times it was commonly consumed throughout Eastern Europe and Central Asia. In Poland, kvas was popular in the eastern borderlands, where Belarusian, Ukrainian and Lithuanian minorities lived. It was a common drink in Polish homes, before cola was introduced into Poland.

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