How to Make a Tea Concentrate
There is a reason the Persian household almost never brews tea one glass at a time. Guests arrive unannounced and stay for hours; the pot must be ready to pour a fresh glass at any moment, strong for one drinker, pale for another, without anyone waiting five minutes for a new steep. The answer, refined over generations, is a concentrate: a small pot of very strong tea, diluted to taste, glass by glass. It is the beating heart of the Persian dam, and it is one of the most useful techniques a tea drinker can learn.
Concentrate, or the Persian dam
A tea concentrate is exactly what it sounds like: tea brewed far stronger than you would ever drink it neat, so that a small amount, topped with hot water, makes a full cup. In Iran this concentrate lives in a little teapot, and the strength of that pot is a point of quiet pride. The whole ritual is built around it, as our guide to brewing Persian tea explains, and it sits at the centre of the wider Persian tea guide.
The logic scales effortlessly. One strong pot can serve a family through a long evening or a single person across a working week. Unlike brewing cup by cup, a concentrate lets everyone drink at their own strength from the same source, and it removes the anxious watching of the clock that ruins so many ordinary pots.
Making the concentrate
The principle is more leaf, less water, and a longer draw.
- Ratio. Use roughly three to four times the leaf you would for a single pot: think a rounded tablespoon of whole-leaf black tea for a small teapot rather than a teaspoon per cup.
- Steep long. Add water just off the boil and let it draw for eight to fifteen minutes. Because you are going to dilute heavily, the usual fear of over-steeping does not apply in the same way; you want depth and colour.
- Keep the leaves whole. Whole leaf gives a concentrate that stays smooth even when strong. Dust and fannings turn a long steep sharp and muddy.
The finished concentrate should look dark and almost syrupy in the pot, too strong to contemplate on its own. That is exactly right.
Taste is the only real measure here, so make your first concentrate, dilute a glass, and judge. If a modest pour with plenty of hot water already tastes full and dark, your ratio is right; if it comes out thin even at a generous pour, use more leaf next time rather than a longer steep. Once you find the proportion your household likes, it becomes second nature, and before long you will stop measuring altogether.
Keeping it warm without stewing it
A concentrate is only useful if it stays hot, and here the samavar is unmatched. The teapot rests on the crown of the samavar, warmed gently by the rising heat while the urn below holds a reservoir of near-boiling water for dilution. The pot stays hot for hours without sitting on a flame, which would stew the leaves bitter. Our note on how to use a samavar covers the setup. If you do not own one, a teapot on a warmer or in a cosy works too, though you should decant the tea off the leaves after fifteen minutes or so to stop the extraction running away. Reheating a concentrate on the stove is a last resort, for reasons our piece on whether you can reheat tea lays out: gentle holding always beats a hard reboil.
Diluting, glass by glass
This is where the method earns its keep. Pour a little concentrate into each glass, then top with hot water to the strength that drinker likes:
- Kamrang, pale, a small measure of concentrate and plenty of water.
- Porrang, strong and dark, a heavier pour of concentrate.
Served in the traditional estekan glasses, the colour itself becomes part of the welcome, and a host learns to read a guest's preference from across the room. A spiced concentrate is especially lovely here: our Rose & Cardamom, which folds whole green cardamom and Persian rose into the same Ceylon base, makes a fragrant pot whose perfume blooms as you add hot water, filling the glass with rose and spice.
Part of the pleasure is social. Because each glass is built to order, a single pot quietly accommodates the strong-tea drinker and the person who takes theirs pale as amber, without fuss or separate brews. The host pours, reads the room, and adjusts, and the tea becomes a small act of hospitality rather than a fixed recipe imposed on everyone at the table.
Cold, iced, and week-long uses
A concentrate is not only for hot service. Diluted with cold water and poured over ice, it becomes instant iced Persian tea; it is also the fastest route to a single strong cup on a busy morning. If you prefer a cold-made base with even less tannin, compare it with a slow cold brew, which arrives at smoothness by a different road. Between the two, you can cover almost every way a person likes to drink black tea from one afternoon's work.
Storing what you do not drink
Strain the concentrate off its leaves before storing, or it will keep extracting and grow bitter in the jar. Kept covered in the fridge, a strained concentrate holds its character for two to three days. Bring it back to life with fresh hot water rather than boiling the concentrate itself, which coarsens the flavour. And always keep it covered, as strong tea readily absorbs the odours of a busy refrigerator.