UPDATE: The most recent batches of the Original Quas were canned on Wed 17th of July. Order now.

Gut Health Impacts Our Entire Body

We have always associated our gut with a digestion function. However, we now have enough evidence to say that our gut has an impact on health far beyond digestion.1

70% of immune cells are located in your gut

From the day we are born, our gut microbiome trains and regulates our immune system, making it crucial for our overall health and wellbeing.2

Plants and fiber-rich food leads to rich diversity of gut microbiome and strong immunity

For over 200,000 years we were hunter-gatherers

We used to consume mostly plant-based and fiber-rich diet. This diet supported a rich diversity of bacteria in our gut. Our body evolved to co-exist with these bacteria and developed an interdependent relationship.3

Modern nutrient-poor processed foods combined with antibiotics and increased sanitation lead to poor diversity of gut microbiome and weak immunity

Modern diets have changed our gut microbiome

Today our lifestyle is packed with calorie-rich, nutrient-poor processed foods. Coupled with an increased use of antibiotics and sanitation, this has changed our gut microbiome.3

"Aspects of our microbial identity have gone extinct and this extinction results in a mismatch between our recently adapted microbiota and our more slowly adapting human genome."3
Department of Microbiology and Immunology, Stanford University School of Medicine

Chronic conditions are going UP

In fact, 2 out of 3 people in the UK are affected by the conditions caused by a dysregulated immune system and chronic inflammation.

20M affected
1 in 3 at risk


5M affected
14M at risk


3M affected
1 in 2 at risk


5.4M affected


7.6M affected
24% of all deaths

"Fermented food intake increases microbiota diversity and decreases inflammation markers"9
Cell |  Volume 184, Issue 16, P4137-4153, 2021

We are on a mission to help

Commercial probiotics have 1-4 types of bacteria and few billion colony forming units (CFU). Fermented foods, such as kvass, contain over 100 types of bacteria and over 500 billion CFU, which is 20-500 times more than in commercial probiotics.

kvass being poured in a glass

What is kvass?

Kvass is a 1000-year-old healthy non-alcoholic beverage made from fermented rye and barley


Original Quas

Mixed Pack Quas

Ginger Quas

Mint Berry Quas


  1. Singh, R.K., Chang, HW., Yan, D. et al. Influence of diet on the gut microbiome and implications for human health. J Transl Med 15, 73 (2017). https://doi.org/10.1186/s12967-017-1175-y
  2. Wiertsema, S.P., van Bergenhenegouwen, J., Garssen, J., Knippels, L.M.J. The Interplay between the Gut Microbiome and the Immune System in the Context of Infectious Diseases throughout Life and the Role of Nutrition in Optimizing Treatment Strategies. Nutrients 88, (2021). https://doi.org/10.3390/nu13030886
  3. Sonnenburg, E.D., Sonnenburg, J.L. The ancestral and industrialized gut microbiota and implications for human health. Nat Rev Microbiol 17, 383–390 (2019). https://doi.org/10.1038/s41579-019-0191-8.
  4. Allergy UK, https://www.allergyuk.org/about-allergy/statistics-and-figures. Accessed in December 2022.
  5. Diabetes UK. https://www.diabetes.org.uk/professionals/position-statements-reports/statistics. Accessed in December 2022.
  6. Macmillan Cancer Support. https://www.macmillan.org.uk/about-us/what-we-do/research/cancer-prevalence. Accessed in December 2022.
  7. Asthma and Lung UK. https://www.asthma.org.uk/support-us/campaigns/publications/difficult-and-severe-asthma-report/. Accessed in December 2022.
  8. British Heart Foundation. https://www.bhf.org.uk/what-we-do/our-research/heart-statistics. Accessed in December 2022.
  9. Wastyk, H. C., Fragiadakis, G. K., Perelman, D., et al. Gut-microbiota-targeted diets modulate human immune status. Cell 184(16), 4137-4153 (2021). https://doi.org/10.1016/j.cell.2021.06.019.