Quick Facts
- A2 curd is India's most accessible and widely consumed probiotic — containing live Lactobacillus acidophilus and Bifidobacterium strains that survive to reach the gut
- The human gut contains approximately 100 trillion bacteria — more than the number of cells in the body. This microbiome affects digestion, immunity, mood, weight, and disease risk
- Kanji (fermented carrot or beet drink from North India) is a traditional winter probiotic with naturally occurring Leuconostoc and Lactobacillus strains from wild fermentation
- Idli and dosa batter fermentation produces Leuconostoc mesenteroides bacteria — a mild probiotic and the reason South Indian breakfast is more digestible than raw rice
- Antibiotics kill both pathogenic and beneficial gut bacteria — consuming A2 curd daily during and after antibiotic courses helps restore the microbiome faster
- Prebiotic fibre (from dal, garlic, onion, raw banana) feeds probiotic bacteria — probiotics without prebiotics do not establish well in the gut
The Gut Microbiome — Why It Matters
The gut microbiome is now considered an organ in its own right. The 100 trillion microorganisms in the gut collectively influence:
Digestion and nutrient absorption — gut bacteria produce enzymes that break down fibre, synthesise vitamins (K2, B12, B7), and regulate mineral absorption.
Immune function — 70–80% of the immune system is located in the gut lining. A diverse, balanced microbiome is essential for appropriate immune responses — preventing both infections and autoimmune overreaction.
Mental health — the gut-brain axis is bidirectional. Gut bacteria produce 90% of the body’s serotonin. Dysbiosis (imbalanced microbiome) is linked to anxiety, depression, and brain fog.
Metabolic health — gut bacteria influence how efficiently calories are extracted from food, insulin sensitivity, and fat storage.
Disease risk — specific microbiome compositions are associated with increased risk of obesity, type 2 diabetes, colorectal cancer, and inflammatory bowel disease.
Indian Probiotic Foods — Traditional and Modern
Probiotic Foods in Indian Diet
| Food | Probiotic Strains | CFU (approx) | How to Use |
|---|---|---|---|
| A2 Curd (fresh, set) | Lactobacillus, Bifidobacterium | 10⁸–10⁹ CFU/cup | With every meal; room temperature |
| Buttermilk (chaas) | Lactobacillus | 10⁷–10⁸ CFU/glass | Post-lunch, with hing and jeera |
| Kanji (fermented) | Leuconostoc, Lactobacillus | Variable — wild ferment | Winter probiotic drink, 1 glass daily |
| Idli/dosa (batter) | Leuconostoc mesenteroides | Moderate | Eat fresh; benefit from batter stage |
| Fermented rice (panta bhat) | Multiple Lactobacillus | High (overnight) | Traditional East Indian preparation |
| Lassi (unsweetened) | Lactobacillus | 10⁷–10⁸ CFU | Better than sweetened — sugar reduces beneficial effect |
| Pickles (brine-fermented) | Lactobacillus, wild ferment | Variable | Traditional brine pickles; not vinegar-pickled |
A2 curd is the most reliable daily probiotic source. Diversity matters — rotate between curd, chaas, kanji, and idli for multiple bacterial strains.
How Traditional Indian Fermentation Works
Traditional Indian fermentation (curd, idli, kanji, pickles) uses naturally occurring lactic acid bacteria (LAB) from the environment and the food itself — not added starter cultures. The process:
- Bacteria present in the milk, grain, or vegetable ferment sugars into lactic acid
- Lactic acid preserves the food and creates the characteristic sour taste
- The resulting food contains live bacteria, digestive enzymes, and improved nutrient bioavailability
Why A2 curd is superior to commercially probiotic yoghurts: Commercial probiotic products often contain 2–3 specific strains added artificially after heat treatment. Traditional A2 curd set at home contains a diverse array of naturally occurring strains — more representative of what a healthy gut microbiome needs.
Prebiotics — Feeding Your Probiotics
Probiotics (live bacteria from food) need prebiotic food to survive and establish in the gut. Without prebiotics, probiotic bacteria pass through without colonising.
Best Indian prebiotic foods:
- Dal and legumes — oligosaccharides feed Bifidobacterium
- Garlic and onion — inulin (potent prebiotic)
- Raw banana or green plantain — resistant starch
- Cooked and cooled rice — resistant starch increases on cooling
- Moringa, okra — prebiotic fibre
- Soaked methi seeds — prebiotic and probiotic combined effect
Daily strategy: Eat A2 curd WITH a dal-based meal for both probiotic and prebiotic in the same sitting.
Available at Organic Mandya
A2 Curd (Desi Cow)
Live Lactobacillus and Bifidobacterium — India's most practical daily probiotic. One cup with every meal for gut and immune health.
Q Does heating curd or cooking fermented food kill the probiotic bacteria?
Does heating curd or cooking fermented food kill the probiotic bacteria?
Yes — most probiotic bacteria die above 50–60°C. Heating idli or adding curd to hot curry kills the live cultures. The benefit from these preparations is the pre-digested nutrients, enzymes, and metabolites the bacteria produced during fermentation — not the live bacteria themselves. For live probiotic benefit, consume A2 curd at room temperature (not in hot preparations), drink kanji cold or at room temperature, and eat fermented foods in their uncooked form where possible. Tadka added to curd raita (hot oil on curd) also kills some cultures — the less heat exposure, the better.
Q Should you take a probiotic supplement or eat fermented food?
Should you take a probiotic supplement or eat fermented food?
Whole fermented foods are generally preferable to supplements for most healthy people. Reasons: (1) Diversity — fermented foods contain multiple bacterial strains plus prebiotic fibre and digestive metabolites; probiotic supplements usually contain 2–5 specific strains; (2) Cost — daily A2 curd is far cheaper than quality probiotic supplements; (3) Survival — well-made A2 curd has comparable bacterial counts to many supplements. Probiotic supplements are indicated for: specific medical conditions (C. difficile infection, antibiotic-associated diarrhoea, specific strains for IBS), post-antibiotic recovery where reliable dose is needed, and travel situations where fermented food is unavailable.
Q Is store-bought curd probiotic?
Is store-bought curd probiotic?
Most commercially packaged curd sold in India has been pasteurised or ultra-heat-treated after setting — this kills the live cultures. The curd is safe and nutritious (calcium, protein) but not a probiotic. Check labels: some brands add live cultures after pasteurisation and label it as containing live cultures — these do provide probiotic benefit. The most reliable probiotic curd is: (1) home-set A2 curd from fresh milk; (2) artisanal curd from local dairies that do not pasteurise after setting. The best test: if fresh curd from a new batch re-sets new curd successfully when used as a starter, it contains live cultures.
Disclaimer: This article is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or a qualified healthcare provider before making dietary changes, especially if you have a medical condition.