What kadak chai actually means, and how to get it

Kadak means strong, but not in the sense of bitter. A kadak cup has depth of colour, body that stands up to milk, and a brisk bite at the end of the sip. You get it from good Assam CTC, a full dose, and a hard boil in plain water before the milk. You do not get it from boiling everything together for longer.

Kadak is the word most people reach for when they are describing what they actually want from chai, and it is worth being precise about, because the two commonest ways of chasing it both make the cup worse.

What does kadak actually mean?

Literally it means hard or stiff. Applied to chai it means a cup with presence: dark, full-bodied, and with a definite bite rather than a soft sweetish finish.

Tea buyers break that down into three things they taste for separately:

• Colour. Brewed in plain water the liquor should run deep amber and clear. With milk it should hold a full reddish brown. A thin tea turns grey when the milk goes in and no amount of extra patti brings it back.
• Body. The weight of it in the mouth. A cup with body feels like it has something in it; a cup without feels like coloured milk.
• Briskness. The bite right at the end of the sip. This is the one people mean when they say a tea is kadak, and it is the first thing a regular chai drinker notices missing.

Strong is not the same as bitter

This is the distinction the whole thing turns on.

Briskness is a clean, lively astringency that lifts the cup. Bitterness is a flat, drying harshness that sits at the back of the throat and does not go. They come from different places: briskness is a characteristic of the leaf, bitterness is usually something you did to it.

The main cause of bitterness is over-extraction. Boil tea long enough and you pull out compounds that no amount of sugar hides. A cup that has been on the flame for eight minutes is not kadak. It is stewed.

How do you make kadak chai?

The method matters more than the quantity, and most people have it the wrong way round.

1. Use enough leaf. A heaped teaspoon per cup, around 3 grams, rather than a level one.
2. Boil in plain water first. Half a cup of water with the tea in it, at a hard rolling boil, for a full minute before anything else goes in. This is the step that produces colour and briskness, and it is the step most people skip.
3. Then milk and sugar. Half a cup of full-fat milk. Skimmed milk will not carry it.
4. Two to three minutes more. Not eight. When the colour turns a deep reddish brown, it is done.
5. Strain and drink it hot.

The two mistakes

Adding more patti. If the method is wrong, more tea gives you a bitter weak cup instead of a mild weak one. Fix the plain-water boil first, then adjust the dose.

Boiling for longer. Extraction is not linear. The good compounds come out early and the harsh ones come out late, so extra time on the flame costs you briskness and buys you bitterness. If you want more strength, boil harder in water at the start, not longer overall.

Does the tea itself matter?

Yes, and it sets the ceiling. No method rescues a tea that has nothing in it.

Briskness is an origin characteristic and Assam has it in a way almost nothing else does. If a tea has been blended down with cheaper leaf from elsewhere, or bulked out with exhausted leaf, you can do everything above correctly and still get a flat cup. That is worth knowing before you blame your pot.

The test is quick: brew a spoon of it in plain water and taste it before any milk. If there is no bite there, there will be none afterwards.