Skip to content
wild fermented
handmade in Houston
organic
small batch
artisan

LAST DELIVERY OF 2025: order by Dec 17 for delivery Dec 18 - orders placed after Dec 17 will be delivered Jan 8!

RYE KVASS

RYE KVASS

Regular price $10.00
Sale price $10.00 Regular price

a powerful, ancient wild-fermented effervescent drink that naturally optimizes human health & microbiome function, improving

  • digestive health via complete synbiotics: 
    • prebiotics (fiber)
    • probiotics (robust society containing 40+ species of living native healthy bacteria, over 500 billion CFUs per bottle)
    • postbiotics (vital metabolites that interact with human genes)
  • metabolism
  • immune health
  • brain/nervous system health
  • chronic disease prevention

rye kvass specialty

  • stomach & digestion relief
  • B vitamin complex for metabolism, nervous system, brain health
  • high antioxidant & stress relief
  • low-to-no gluten: suitable for gluten-sensitive individuals (not Celiac)

flavor

caramelly, malty & rich with a rounded rye flavor - complex & not sour, naturally effervescent

nutrition

per bottle (16oz): 44 calories | carb 9g | protein 2g | fat 0g | fiber 1g

microelements: vitamin B12 19% DV | vitamin B3 19% DV | vitamin B2 15% DV | vitamin B1 14% DV | vitamin E 18% DV | selenium 7% DV | manganese 7% DV | magnesium 3% DV + trace elements of multiple other microelements

probiotics: lactobacilli, saccharomyces, leuconostoc + 40 other species 

bioactive components/antioxidants: phenolic compounds, carotenoids, tocols, phytosterols, alkylresorcinols, benzoxazinoids, lignans

wild fermented | raw | organic | vegan | handmade | small batch

ingredients

  • Volgin's organic wild fermented rye sourdough bread
  • imported classic European fermented germinated dark rye malt
  • reverse osmosis filtered water from Texan aquifers (Chicot & Evangeline aquifers)
  • Volgin's organic custom rye culture cultivated from germinating rye

handling

never filtered, pasteurized or preserved in any way - healthy native rye microbiota in each bottle naturally protect & preserve each ferment for use for up to 3 months past the Best By date

keep refrigerated, serve cold - allowing kvass to get warm will speed up fermentation & cause excess fizziness

use

  • enjoyment: rye kvass is gentle, enjoy the entire bottle in one sitting
  • microbiome + nutrition + metabolism: 4-6 oz daily minimum at any time
  • mixer + probiotic shot + mocktail: add 2-4 oz to any drink to instantly transform into probiotic powerhouse

packaging

bottled in an aluminum bottle with an inert liner (BPA/BPS/PFAS-free, surpassing US & EU regulations):

  • functionally like glass, bottle does not interact with kvass
  • kvass never touches aluminum, no kvass-to-aluminum interaction 

bottle, cap & bottle print is

  • 100% produced in the USA
  • 100% recyclable
  • reusable for cold beverages
  • easy to open & close for accessibility

process

culture & fermentation process designed & monitored by Dr. Volgin

handmade by the Volgin team in small batches at Volgin's naturetech facility in Houston, Texas using the regenerative and biologically-driven principles of naturetech

all products are fermented in food grade stainless steel containers

naturetech innovation

Volgin's industry-leading naturetech fermentation process creates food containing powerful synbiotics (probiotics, prebiotics, postbiotics) and bioavailable nutrition that is unmatched by commercially available ferments or supplements (pills, powders, etc.). This gold standard efficacy is made possible by the "quorum sensing" state of microbiota in each product, which can only be obtained in an active, biologically correct fermentation state.

 

get deep: to explore rye kvass science, click on underlined text for scientific works cited

Organic, wild fermented kvass is a naturally carbonated "rye soda" containing powerful synbiotics for unmatched gut microbiome support:

probiotics: 40+ naturally occurring living species of bacteria (billions of CFUs) and beneficial microorganisms in a quorum sensing state - full of robust, effective communities that integrate into the microbiome

prebiotics: soluble & insoluble rye fiber to feed existing & new health gut microbiome bacteria

postbiotics: vital microorganism metabolites that promote microbiome, immune system, metabolism and hormonal health not found anywhere except living, correctly fermented foods 

Volgin's custom created wild rye kvass culture is comprised of native rye microorganisms from freshly germinating organic rye grain berries. This ensures powerful & complete rye fermentation, the same way it would happen spontaneously in nature. Native rye microorganisms make up a vital part of a diverse, healthy human gut microbiome and work symbiotically with other correctly fermented foods.

Rye kvass specializes in:

high levels of bioavailable B vitamins: wealth of vitamins B12 (19% DV), B3 (19% DV), B2 (15% DV), B1 (14% DV), selenium (7% DV), manganese (7% DV) & microelements for nervous system, brain health & metabolism

high bioactivity: bioactive compounds made by active microbiota provide anticarcinogenic, antidiabetic, hypoglycemic, antioxidative properties

metabolism boost: high bioactivity and lower carbohydrate load due to high fiber which help offset already low naturally occurring sugars

digestion: promotes digestive health & helps stomach function/motility

140 in stock

  • gut health to your door
  • 100% satisfaction refund

Ask a question

The fields marked * are required.

FAQ

When will I get my order?

All orders placed by Wednesdays at 10am will be fulfilled & shipped the next day Thursday each week. Orders placed after Wednesday at 10am will be fulfilled & shipped next Thursday. You will receive a tracking number once your order has shipped so you can monitor its progress.

If you qualify for local free delivery (orders $50+ in select zip codes - see if your order qualifies in checkout), you will receive a tracking text to follow your delivery in real time using Getcho.

If you have a subscription, it will be automatically fulfilled on Thursdays via shipping or local delivery, depending on the option you chose at checkout.

We recommend choosing a faster shipping method at checkout to ensure your order stays cold throughout shipping. 1-2 business days is ideal.