Nilgiri vs Assam tea for blending

Published 24 October 2026 · BluVira Exports, Kotagiri

Two of India’s best-known black teas come from Assam in the north-east and the Nilgiris in the south. Assam is India’s largest tea-growing region, and the Nilgiris lead South India. The two are often blended together, and for good reason. The two teas are almost opposites in the cup, and a blender who knows what each one does can build a tea that tastes right and costs less.

Two regions, two cups

Assam tea grows mainly on the low, hot plains of the Brahmaputra valley. It gives a strong, malty, full-bodied cup with a deep colour that stands up to milk and sugar. It is the backbone of most breakfast teas and of strong milk tea.

Nilgiri tea grows in the Blue Mountains of South India, between about 1,000 and 2,500 metres. It gives a bright, brisk, fragrant cup with a lighter body, a golden liquor and low astringency. It is pleasant without milk, and it stays clear when cooled, which makes it a favourite for iced tea.

Side by side

• Body: Assam is heavy and full; Nilgiri is light to medium.
• Flavour: Assam is malty and robust; Nilgiri is brisk, bright and lightly floral.
• Colour: Assam brews dark red-brown; Nilgiri brews bright golden to amber.
• With milk: Assam keeps its strength and colour; Nilgiri softens with milk, so it is usually blended.
• Without milk and iced: Nilgiri is smooth and stays clear; Assam can taste heavy and turn cloudy when cooled.
• Seasons: Assam plucking stops for the winter, roughly from mid-December to mid-February; the Nilgiris have two monsoons, so tea is made almost all year round.
• Price: at the Indian auctions, Nilgiri CTC usually sells well below Assam CTC.

What each tea brings to a blend

Assam brings strength, body and colour. It is what makes a cup of milk tea look and taste strong.

Nilgiri brings brightness, fragrance and value. Added to an Assam blend, it lifts the flavour, keeps the liquor bright, and lowers the cost per kilogram. Because Nilgiri tea is made through most of the year, it also helps keep a blend steady when Assam is out of season.

Common blends

• Strong milk tea, karak and chai: mostly Assam CTC for body and colour, with Nilgiri CTC to lower the cost and brighten the cup.
• Breakfast tea: Assam for strength, with Nilgiri for a brisk, clean finish.
• Plain tea, tea with lemon and Gulf-style black tea: mostly or entirely Nilgiri, sometimes with Ceylon or Kenyan tea.
• Iced tea: Nilgiri orthodox on its own, for a clear, smooth liquor.

There is no single right ratio. It depends on the cup you want, the grades you use, and the price you need to hit, so blends are worked out by tasting.

How to replace part of an Assam blend with Nilgiri

1. Start from your current tea: send a sample of the blend you use today, with its grades and how it is drunk (with milk, plain, iced).
2. Taste trial blends with increasing shares of Nilgiri, brewed the way your customers brew it.
3. Stop where the cup still matches. Check colour with milk, strength and flavour against your current tea.
4. Approve a reference sample and agree the grades, so every shipment can be matched to it.

For what the grade names mean, see our guide to Nilgiri tea grades; to see how Nilgiri compares with tea regions around the world, read where the world’s tea grows, and why the Nilgiris stand out.

BluVira Exports buys Nilgiri tea at the Coonoor auction and directly from factories and estates. Our tea specialist has traded Nilgiri tea since the late 1990s and can match your current blend from Nilgiri tea. See our Nilgiri tea range or download the tea specification sheet (PDF).