Fermentation Cultures by Zoh
The complete range of authentic, lab-tested live cultures and starters — cultivated, maintained, and shipped from India to over 175 countries. Whether you're starting your first probiotic ferment or running a serious home fermentation programme, this is the catalogue.
From kefir to kombucha, koji to natto, tempeh to sourdough — every culture here is third-party tested for strain identity, viable count, and absence of contaminants. We don't sell generic cultures; we sell the specific microbial communities that produce real, traditional fermented foods.
What's on this page
- What fermentation cultures are
- Why authentic cultures matter
- Milk & water kefir cultures
- Yogurt & cream starter cultures
- Kombucha SCOBY & kits
- Tempeh starter cultures
- Sourdough starters
- Koji & Japanese cultures
- Natto starter culture
- Which culture should you choose?
- International shipping & delivery
- Frequently asked questions
What fermentation cultures actually are
A fermentation culture is a living (or freeze-dried-but-revivable) community of bacteria, yeasts, or fungi that, when added to a food substrate, transform it through controlled microbial activity. The right culture turns milk into kefir, sugar water into kombucha, soybeans into tempeh, rice flour into sourdough, and so on — each culture producing a specific, time-tested fermented food.
Every traditional fermented food on earth has a specific microbial signature. Real San Francisco sourdough requires Lactobacillus sanfranciscensis. Real natto requires Bacillus subtilis var. natto. Real Bulgarian yogurt requires Lactobacillus delbrueckii subsp. bulgaricus. Generic "sourdough starter" or "yogurt culture" won't reproduce these foods authentically. The right cultures will.
Why authentic cultures matter — and where most fall short
The market is full of "probiotic starters" that fail one of three quality bars:
- Strain authenticity: Cheap starters often substitute generic lactic acid bacteria for the specific cultivars that produce real flavour and texture. Tastes off, doesn't behave traditionally.
- Viable count: Improperly handled or aged cultures lose viability before reaching customers. They simply don't ferment when used.
- Cross-contamination: Facilities that handle multiple cultures without proper protocols produce starters with contaminants — hostile yeasts, undesirable bacteria, or off-strain substrains that drift the culture's behaviour.
Zoh's cultures are tested for all three. Strain identity verified, viable count measured, contaminants absent. This is the basic standard for serious fermentation — and it's much rarer in the market than it should be.
Milk & Water Kefir Cultures
Milk Kefir Starter
Best sellerThe most diverse probiotic you can make at home — 55 to 60 strains of bacteria and yeast. Ferments any whole milk in 12–24 hours. Easier than maintaining traditional kefir grains, with the same probiotic depth.
Water Kefir Grains
Dairy-freeLive, multiplying culture for naturally sparkling, dairy-free probiotic drinks. Brews from sugar water in 24–48 hours. Particularly forgiving in hot climates — the easiest fermented drink for warm-climate brewers.
Yogurt & Cream Starter Cultures
Greek Yogurt Starter
Thick, creamy, labneh-style yogurt. Strain longer for labneh, less for traditional Greek-style yogurt. Particularly popular across the GCC where labneh is a daily staple.
Bulgarian Yogurt Starter
The original yogurt — thinner, sharper, biologically richer than Greek. Authentic Lactobacillus bulgaricus. The closest fermented dairy to traditional Indian dahi, but with a defined microbial composition.
Crème Fraîche Starter
Authentic French-style crème fraîche from fresh cream in 24 hours. Doesn't curdle in hot dishes — stir it directly into pasta sauces, soups, and curries. Heirloom-grade culture that propagates indefinitely.
Kombucha SCOBY & Brewing Kits
Kombucha SCOBY
Live SCOBY pellicle for brewing kombucha at home. 9-step quality checked, third-party tested, grown on organic green and white tea. Ships in mature starter liquid for revival reliability.
Tempeh Starter Cultures
Soy Tempeh Starter
Authentic Indonesian-style soy tempeh — firm, nutty, complete-protein, probiotic-rich. Rhizopus oligosporus, the same strain used by Indonesian families for generations. 5 sachets ferment 5–6 kg of tempeh.
Soy-Free Tempeh Starter
Rare globallyOne of the only soy-free tempeh starters available anywhere. Ferments chickpeas, black beans, lentils, ragi, jowar, sunflower seeds. For soy allergies, AIP/paleo diets, or anyone wanting variety in fermented protein.
Sourdough Starter Cultures
San Francisco Sourdough
The famously sour, chewy, open-crumb SF loaf. Authentic Lactobacillus sanfranciscensis + Candida humilis — the specific microbial pairing that defines genuine SF-style bread.
Whole Wheat (Atta) Sourdough
Cultivated entirely on Indian atta from the start — not a Western starter adapted to atta. Perfect for whole-wheat sourdough loaves, sourdough chapati, naan, kulcha. Particularly popular with Indian/South Asian diaspora abroad.
Gluten-Free Sourdough
For coeliac, wheat allergy, and gluten-free households. Cultivated entirely on gluten-free grains — brown rice, ragi, jowar, millet. Real fermented bread with proper depth, not the gum-heavy commercial GF stuff.
Koji & Japanese Cultures
Organic Ambemohar Rice Koji
India's firstThe foundation of miso, sake, soy sauce, shio koji, and amazake. Grown on organic Ambemohar rice — a unique aromatic Maharashtra varietal that produces koji with subtly fruity, floral notes. Genuinely India's first authentic rice koji.
Natto Starter Culture
Natto Starter (B. subtilis var. natto)
India's firstThe only food source of nattokinase. Highest dietary Vitamin K2 (MK-7) by an enormous margin. Authentic Bacillus subtilis var. natto. Particularly significant for cardiovascular and bone-density health.
Which culture should you choose?
By goal
Maximum probiotic diversity
Milk Kefir Starter — 55 to 60 strains, the most diverse home-fermentable food.
Dairy-free probiotic drink
Water Kefir Grains — fizzy, low-sugar, dairy-free, kid-friendly.
Cardiovascular & bone health
Natto Starter — nattokinase + the highest dietary Vitamin K2.
Plant protein & vegan diet
Soy Tempeh or Soy-Free Tempeh — complete protein with B-vitamins.
Fresh probiotic drink for any occasion
Kombucha SCOBY — endless variations, naturally fizzy.
Real artisan bread at home
By dietary need
Lactose intolerant
Milk Kefir (90–99% lactose removed) or Water Kefir (dairy-free).
Soy allergy / AIP / paleo
Soy-Free Tempeh Starter — chickpeas, lentils, ragi, seeds.
Coeliac / gluten-free
Gluten-Free Sourdough — made for rice, millet, ragi, sorghum.
Diabetic-friendly fermented foods
Tempeh and water kefir both have minimal glycaemic impact. Sourdough is dramatically lower-GI than commercial bread.
By cuisine tradition
Indian cuisine
Bulgarian yogurt (closest to dahi), atta sourdough, chickpea tempeh.
French / European
Middle Eastern (labneh, laban)
Greek yogurt starter for labneh; Bulgarian for traditional laban.
Indonesian / SEA
Soy tempeh starter — the original Java tradition. Plus water kefir for tropical climates.
American / artisanal baking
🌍 International shipping & delivery
All Zoh fermentation cultures ship next business day from India. Freeze-dried and dehydrated cultures are extremely shelf-stable and tolerate international transit easily — including warm climates. Live cultures (kombucha SCOBY, water kefir grains) ship in their own protective medium.
| India | 1–4 business days · free shipping on most orders |
| UAE, Saudi Arabia, Kuwait, Qatar, Oman, Bahrain | 5–9 business days |
| Singapore, Malaysia, Indonesia, Thailand, Philippines, Vietnam, Hong Kong | 5–9 business days |
| Pakistan, Bangladesh, Sri Lanka, Nepal | 4–8 business days |
| Japan, Korea (rice koji + natto) | 5–9 business days |
| UK, Ireland, EU | 7–14 business days |
| US, Canada, Australia, New Zealand | 7–14 business days |
Customs: All Zoh cultures are classified as food products and clear customs without issue in our shipping destinations. Full documentation included with every international order. Replacement guarantee: If any culture doesn't activate or arrives non-viable, we reship at our cost.
Frequently asked questions
Where are Zoh's cultures cultivated?
All cultures are cultivated, freeze-dried (or dehydrated), and packaged at our facility in India. Strain identity, viable count, and contaminant testing happen on every batch before dispatch. We don't resell cultures from third-party labs — these are our own.
How long do the cultures stay viable in transit and storage?
Freeze-dried and dehydrated cultures are shelf-stable for 12 months at room temperature, often longer. International transit through warm climates doesn't damage them. Live cultures (kombucha SCOBY, water kefir grains) are shipped in their own protective medium and stay viable through 7–14 days of transit. We replace at our cost if anything arrives non-viable.
Do I need any special equipment to ferment with these cultures?
For most: a clean glass jar, a breathable cover, and a warm room is enough. Some cultures (natto, koji) prefer specific temperature ranges and benefit from a yogurt maker or warming setup. Detailed equipment notes are on each product page.
Can I order multiple cultures together?
Yes — we recommend it. Many customers brew 3 or 4 different ferments simultaneously (e.g. milk kefir for breakfast, water kefir as a daily fizzy drink, sourdough for weekly bread). Bundled orders ship together and reduce per-item shipping costs.
Do you ship to my country?
If you're in India, the GCC, South Asia, Southeast Asia, the UK, EU, US, Canada, Australia, New Zealand, Japan, Korea, Hong Kong, or most other countries — yes. We ship to over 175 countries. Restricted destinations are rare and clearly flagged at checkout.
What's your replacement policy if a culture doesn't work?
If any culture doesn't activate within the expected timeframe (specified on each product page), email us at info@zohprobiotics.com with a photo and brief description. We reship at our cost. The standard for failure is the culture not fermenting after a proper attempt — not a flavour preference or technique issue.
I'm new to fermentation. Where should I start?
Easiest first ferments: milk kefir (with our freeze-dried starter) or water kefir grains. Both ferment in 12–48 hours, both have wide tolerance for technique errors, and both produce visibly successful results on the first try. Once you've done these, sourdough and tempeh are natural next steps.
How much does each culture cost per litre/kg of finished food?
Roughly: ₹15–25 per litre of milk kefir, ₹5–10 per litre of water kefir, ₹20–40 per kg of tempeh, ₹5–7 per bottle of kombucha. All dramatically lower than retail equivalents (typically 5–20x cheaper). The cultures pay for themselves within a few batches.
Not sure which culture to start with?
Email us at info@zohprobiotics.com with what you're trying to make or what gut/health goal you're working toward. We respond personally, in your timezone, usually within 24 hours.
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