Ingredient DNA
Dahi — Yogurt in Indian Cooking
Lactobacillus fermented milk · Family: Dairy (fermented) · Genus: —
Origin
India — ancient fermented dairy
Category
Fermented Dairy
Form
Set yogurt — mild, slightly sour
Primary Use
Raita · Kadhi · Marinade · Lassi · Biriyani dum
Difference from Greek
Thinner, milder, less acid — different behaviour in cooking
Regional Weight
★★★★★ All India

What Does Dahi Taste Like?

Flavour Profile — Dahi
Sourness
★★☆☆☆
Creaminess
★★★★☆
Mildness
★★★★☆
Richness
★★★☆☆
Freshness
★★★☆☆
Aroma Strength
★★☆☆☆
Kingdom
Plantae
Family
Dairy (fermented)
Genus
Species
Lactobacillus fermented milk
Hindi Name
Dahi / Curd
Sanskrit Name
Dadhi
English Name
Dahi
Arabic Name
Laban

Dahi in Every Indian Language

LanguageNamePronunciation
EnglishYogurt / CurdDAH-hee
Hindiदही — DahiDAH-hee
Bengaliদই — DoiDOY
Tamilதயிர் — ThayirTHYE-eer
Teluguపెరుగు — Perugupeh-ROO-goo
Malayalamതൈര് — ThairuTHYE-roo
Kannadaಮೊಸರು — MosaruMOH-sah-roo
Gujaratiદહીં — DahiDAH-hee
Marathiदही — DahiDAH-hee
Punjabiਦਹੀਂ — DahiDAH-hee
Urduدہی — DahiDAH-hee
Sanskritदधि — DadhiDAH-dhee

What Is Dahi?

Dahi is Indian yogurt — milk fermented with Lactobacillus cultures to produce a mild, slightly sour set curd. It is one of the foundational dairy ingredients of Indian cooking, present in virtually every regional cuisine in different applications. Indian dahi is thinner and milder than Greek yogurt, which affects how it behaves in cooking — they cannot always be substituted for each other.

Dahi's dual role — as a food and as a cooking ingredient — distinguishes it from most dairy products. It is consumed directly (with rice, as raita, in lassi), used as a marinade base (tandoori, tikka), incorporated into curries (kadhi), and used in the dum process of biryani.

What Indian Cooking Loses Without Dahi
  • Raita — the cooling yogurt accompaniment — is the essential complement to spicy preparations in Indian serving
  • Tandoori and tikka marinades use dahi as the protein-protective coating that enables high-temperature cooking without burning
  • Kadhi — the yogurt-besan curry of North India and Gujarat — is a specific preparation that only works with Indian curd
  • Biryani dum cooking uses dahi-sealed vessels — the steam generated from the yogurt layer cooks the top layer
  • Lassi (both sweet and salted) and chaas (buttermilk) are among India's most consumed beverages

Dahi Through History

Historical Record
Ancient Fermented Dairy

Fermented milk (dahi) has been made in India for at least 5,000 years. Sanskrit texts from the Vedic period reference dadhi extensively — both as food and in religious ritual. The tradition of eating dahi-chawal (yogurt with rice) as a restorative, cooling meal is mentioned in ancient texts. The Ayurvedic tradition classifies dahi as both nutritive and medicinal, particularly for gut health.

Explore Indian Food History →

The Science of Dahi

🔬Cooking Science
Lactic Acid Fermentation and Protein Structure
Dahi is produced when Lactobacillus bacteria ferment milk lactose into lactic acid. The lactic acid lowers pH, causing milk proteins (casein) to partially denature and form a gel network — the set curd. When dahi is added to hot cooking (kadhi, curries), the proteins can curdle if heated too rapidly. The standard technique is to whisk dahi smooth, add it to the preparation at reduced heat, and stir continuously. This prevents curdling by gradual heat exposure.

How to Store Dahi

Storage Reference
Fresh homemade
3–5 days refrigerated
Commercial
Use by date
Key note
Dahi continues souring in the refrigerator — use within 2–3 days for mild dahi, up to 5 days for sour dahi in cooking

How to Buy Good Dahi

What to Look For — and What to Avoid
✓ Look For
  • Firm set — not too liquid
  • Mild smell — slightly sour, not fermented-sour
  • Full-fat for cooking applications
  • Homemade is superior for cooking
✗ Avoid
  • Very sour smell — too old
  • Runny/liquid — not well set
  • Very thick/Greek-style — different cooking behaviour
  • Whey separation throughout — old

How to Use Dahi Correctly

Using Dahi in the Kitchen
Technique, quantity, and what to avoid
  • Whisk smooth before adding to hot preparations — never add cold lumpy dahi directly
  • For kadhi: whisk dahi + besan together cold before adding to hot water
  • For marinades: use full-fat dahi for best coating adhesion
  • For raita: season cold dahi with salt, cumin, coriander
  • For lassi: blend dahi with water (2:1), add sugar or salt

What Dahi Pairs Well With

Dishes That Use Dahi

Where Dahi Matters Most

Regional Importance
★★★★★
All India
Universal — every regional cuisine
★★★★★
Punjab
Lassi, raita, kadhi
★★★★★
North India
Tandoori marinades
★★★★★
South India
Thayir sadam (curd rice) — daily meal
★★★★★
Gujarat
Kadhi, raita, chaas
★★★★★
Rajasthan
Kadhi and cooling preparations
Where Dahi Fits in Indian Cooking
All Indian CuisinesEssential
Jain CookingEssential
Sattvic CookingEssential

Indian Dahi vs Greek Yogurt vs Sour Cream

Indian Dahi vs Greek Yogurt vs Sour Cream
FeatureIndian DahiGreek YogurtSour Cream
ConsistencyMedium-thinThick, strainedThick
FatFull or low-fatTypically low-fatHigh fat
SournessMildMore sourSour
For kadhi?Yes — standardToo thick — use with dilutionNo
For marinade?Yes — idealCan workNot ideal
For raita?Yes — idealWorks, thickerNo

Nutrition and Key Compounds

Dahi — Honest Nutritional Picture
Culinary quantities — aromatic and flavour contribution, not macro nutrition
Dahi (full-fat, per 100g): ~3.5g protein, ~4g fat, ~5g carbohydrate, ~100 calories. High in calcium (~120mg/100g), B12, and live cultures (Lactobacillus). Probiotic cultures support gut health with regular consumption.

Substitutes for Dahi

What Works and What Does Not
Good substitute
Greek yogurt, diluted 1:1 with water
For cooking applications — provides similar protein but adjust consistency.
Good substitute
Sour cream (for marinades in a pinch)
Different fat profile but similar protective coating for cooking.
Practical Insight
From the Kitchen
For perfect raita, use fresh dahi and season immediately before serving — dahi mixed with salt hours in advance releases water and becomes watery. Roasted cumin powder added to raita is non-optional — it converts a plain yogurt condiment into a complete flavour experience.