What is CTC Tea? A Complete Guide to Assam’s Most Popular Tea-Making Process

If you’ve ever had a strong, milky cup of chai anywhere in India, chances are it was made with CTC tea. CTC stands for Crush, Tear, Curl — a mechanical processing method that defines the bulk of Assam’s tea production and, by extension, most of the tea consumed across the country every day.

At Estate Brew, CTC forms the backbone of what we source and supply. Here’s a closer look at what it actually is, how it’s made, and why it matters if you’re buying tea for your business.

What Does “CTC” Actually Mean?

CTC refers to the machine process invented in the 1930s that revolutionized tea manufacturing. Instead of rolling whole leaves by hand (the Orthodox method), CTC machines pass withered tea leaves through a series of cylindrical rollers with sharp teeth. These rollers crush, tear, and curl the leaf into small, dense, uniform pellets.

The result is a tea that looks completely different from Orthodox leaf tea — granular, dark, and tightly rolled rather than long and wiry.

How is CTC Tea made?

The CTC process follows the same broad stages as any black tea, with one key difference at the rolling stage:

• Plucking — Two leaves and a bud are harvested from the tea bush.
• Withering — Fresh leaves are spread out to reduce moisture content, making them pliable.
• CTC Processing — Withered leaves go through the crush-tear-curl rollers, breaking down the leaf structure almost completely.
• Fermentation (Oxidation) — The exposed leaf juices oxidize rapidly, developing the dark color and bold flavor CTC tea is known for.
• Drying — Oxidation is halted through controlled drying.
• Sorting & Grading — The dried tea is graded by particle size into categories like BOP, BOPSM, PD, and Dust.

Because the leaf is broken down so thoroughly, CTC tea infuses much faster and more intensely than Orthodox tea — which is exactly why it works so well with milk and sugar.

Why CTC Dominates the Indian Tea Market?

CTC tea isn’t just popular by accident. A few practical reasons it became the standard for chai across India:

• Strength — The broken particle size means more surface area in contact with water, producing a strong, robust brew in less time.
• Consistency in brewing — Smaller, uniform particles infuse predictably, which matters at scale — whether it’s a roadside stall or a HORECA kitchen.
• Cost efficiency — CTC processing is faster and yields more usable product per harvest compared to Orthodox methods.
• Pairs well with milk and spices — The bold tannins and color hold up against milk, sugar, and masala, unlike more delicate Orthodox or green teas.

Understanding CTC Grades

Not all CTC tea is the same — grade affects strength, appearance, and how it performs in the cup. Some common grades you’ll come across:

• BP (Broken Pekoe) — Coarser, larger particles than BOP, giving a slightly milder liquor with good appearance — a common choice for buyers wanting body without an overly strong infusion.
• BOP (Broken Orange Pekoe) — Slightly larger particles, balanced strength and appearance.
• BOPSM (Broken Orange Pekoe Small Mid) — Finer than BOP, stronger liquor.
• PD (Pekoe Dust) — Fine particles, fast-infusing, commonly used in tea bags and high-volume catering.
• Dust grades — The finest particles, producing the strongest, quickest brew — popular for masala chai.

The right grade depends entirely on your end use — a tea stall brewing in bulk has very different needs from a packaged tea-bag brand.

What Buyers Should Know

If you’re sourcing CTC tea for resale, food service, or private labelling, a few things matter more than the marketing copy on a packet:

• Grade fit — BP is our primary CTC grade, suited to buyers who want strong body and good appearance without the sharper bite of finer grades like BOPSM or Dust.
• Garden and season — Second flush Assam CTC (roughly June to September) tends to deliver more body and color than first flush.
• Batch variability — Tea is an agricultural product. Even within the same garden and grade, taste and strength can shift slightly batch to batch. We believe in transparent batch sourcing rather than promising identical cups every time — what you get is an honest reflection of that harvest.
• Particle uniformity — Inconsistent particle size in a CTC batch usually signals processing or sorting issues, and can affect brew strength.

Sourcing CTC Tea from Assam

Assam’s climate — high humidity, heavy rainfall, and fertile alluvial soil in the Brahmaputra valley — is part of why its CTC tea is naturally bold and full-bodied compared to CTC grown elsewhere. It’s this character that built Assam’s reputation as the source for “real” chai.

At Estate Brew, we work directly with growers to source CTC tea by grade, garden, and harvest batch — giving bulk buyers clarity on exactly what they’re getting, rather than a generic blend.

Looking to source CTC tea in bulk? Get in touch with our team for grade samples and pricing.