Est. 1839 · The Authority The independent guide to Assam, the malty black tea of the Brahmaputra valley Assam.biz
THE ASSAM MALT AUTHORITY NULLUM MANE SINE ROBORE The Assam Malt Authority
The
ASSAM
Malt Authority
Nullum Mane Sine Robore No morning without strength

Tagged: ctc

Article · Brewing

The Second Cup Was Decided at the Rollers

Whether a second steep of Assam is worth the wait was settled before the kettle ever boiled. The chemistry of what crush, tear, curl leaves behind, what whole leaf holds in reserve, and why one cup differs in kind, not just in strength.

Jul 8, 2026 →
Article · Grades & Processing

The Garden's Mark: How to Read the Auction Room to Find Good Assam

A grade tells you the leaf size, not the cup. The garden's mark does: read year after year at the Guwahati auction by buyers who taste before they bid, it is the trade's running verdict on how one estate's tea actually drinks, and it is the best shopping tool a drinker has for seeking out Assam worth buying.

Jun 27, 2026 →
Article · Grades & Processing

CTC vs Orthodox: Two Ways to Make Assam

Assam is processed two ways. CTC (crush, tear, curl) makes the brisk, strong granules behind most tea bags and builders' tea. Orthodox keeps the leaf whole for a more nuanced cup. Here is how they differ, why the chemistry diverges, and when to reach for each.

Jun 24, 2026 →
Article · Estates & Terroir

TV1 to TV31: The Clones That Built Modern Assam

Almost no Assam garden grows tea from seed anymore. Since 1949, Tocklai's breeding station has released a numbered line of clones, TV1 to TV31, and they now cover most of the valley. Here is what a clone is, why the industry switched, and what got lost along the way.

Jun 16, 2026 →
Article · Brewing

The Cloud in the Cup: Tea Cream as a Strength Test

A strong Assam left to cool turns cloudy, sometimes almost jelly thick. It is not spoiled tea. It is caffeine and the leaf's own strongest compounds falling out of solution, and the trade has used it as a strength test since long before anyone could explain it.

Mar 12, 2026 →
Article · Brewing

Orthodox Averaged Higher Than CTC in an Assam Caffeine Study

An average cup of black tea carries about 48 milligrams of caffeine, roughly half of what a cup of coffee holds. Here is the lab measure of Assam's leaf, orthodox against CTC, how fast caffeine leaves the leaf, and the decaffeinated black tea CSIR-NEIST in Jorhat has developed.

Feb 19, 2026 →
Article · Grades & Processing

The Step That Makes or Mars Every Cup of Assam

Before a leaf is ever rolled or crushed, it spends 9 to 18 hours doing nothing but losing weight in a long metal trough. Here is what withering actually does to the leaf, why CTC and orthodox want it done to different degrees, and what a factory's wither percentage really measures.

Feb 13, 2026 →
Article · Brewing

Ronga Saah: The Assam Tea Stall Is Not a Chai Wallah

Ronga saah is Assam's default tea stall order, black tea steeped strong and sweetened in a small glass tumbler, no milk. Walk up to a roadside stand here and that is what lands in front of you, not the milky, spiced chai "chai wallah" means everywhere else in India.

Feb 6, 2026 →
Article · Brewing

What Your Tap Water Does to a Cup of Assam

Two households can brew the same tin of Assam, the same weight of leaf, the same boil, and still end up with two different cups. The variable is the calcium and magnesium already in the water, not the tea, before the kettle ever gets involved.

Jan 30, 2026 →
Article · Grades & Processing

Malt Is Built Late, and Separately From Color

Theaflavins and thearubigins build steadily as the leaf oxidizes. The malt note does not. It is a small family of Strecker aldehydes, cooked out of amino acids the wither spent a day stockpiling and burned into aroma later, in the heat of processing, on its own separate clock.

Jan 23, 2026 →
Guide · Brewing

Brewing Assam

The Authority's standing method for Assam: boiling water, a measured dose of leaf, and a few minutes left alone. This is the complete reference, covering water, leaf, time, milk, the second steep, CTC versus orthodox, and the test for a properly brisk cup.

→
Guide · Brewing

Briskness

Briskness is a live, bright character in the liquor. What the word means, the formula behind it, and what raises or dulls it.

→
Guide · Grades & Processing

Assam Tea Grades

A grade names the size of the made leaf and how much golden tip rides in it, not the flavor. The complete reference: how a tea is graded, the four sizes, the orthodox lettered alphabet, the CTC codes, and what a grade does and does not promise.

→
Guide · History

The History of Assam Tea

The complete record of Assam tea: the wild assamica plant noted in 1823, the British annexation that opened the valley, the first eight chests sold in London in 1839, the Assam Company, the CTC machine that put Assam in the world's tea bags, and the region that grew into the largest tea producer on earth.

→
Guide · Basics

Assam Black Tea of the Brahmaputra Valley

Assam tea is the malty, brisk, full-bodied black tea grown in Assam, the Indian state in the Brahmaputra valley of northeast India, from Camellia sinensis var. assamica. What it is, where it grows, how it is made and graded.

→