Chaiyo Bar
Chaiyo Bar Published 18 June 2026 Updated 18 June 2026 600+ words

Kulhad vs Mug vs Paper Cup

Three cups, three very different teas. The science of heat retention, porosity and taste transfer — and an honest answer on whether the clay is worth switching for.

Decorative clay kulhad teapots and kettles hanging inside Chaiyo Bar, Bargarh

The cup is doing more work than most people give it credit for. Same tea, three vessels, and you can taste the difference every time. Here is the honest version, including the case where the clay is not worth it.

The three cups compared

For hot chai in Odisha: unglazed terracotta, by a clear margin. Paper cups are for speed and glass is for cold drinks. If you are drinking chai hot and slowly, the clay wins on both heat and taste.

How each cup performs for hot chai
CupHeat retentionTaste effectBest for
Kulhad (unglazed terracotta)ExcellentEarthy, rounds out the teaHot chai, drunk slowly
Mug (ceramic)GoodNeutralMilky or malai chai
Steel tumblerPoorMetallic after 10 minutesCoffee, fast drinking
GlassPoorClean, thinCold drinks
PaperWorstThin, slightly paperySpeed and volume

Heat retention

Porous terracotta is a slow conductor of heat. A steel tumbler transfers heat from the tea to your hand in about two minutes; a kulhad will still be too hot to hold comfortably well past that. In a city where you are walking between shops, that difference is the entire practical argument.

It also means the tea keeps extracting as it sits. A steel cup of boiled chai goes flat and slightly bitter within fifteen minutes. A kulhad keeps tasting like it did when it was poured for closer to half an hour.

Taste transfer

Unglazed clay is slightly porous and it interacts with the liquid. Long-term drinkers describe it as an earthy or soil note, which sounds off and is not. The effect is to round off the sharp edges in a strong CTC chai — the same tea from a glass tastes more aggressive.

A new, unseasoned kulhad gives you the cleanest version of this, because it has no history of tea oils in it. A cup that has been used for months tastes more distinctly of clay.

Which one should you actually pick

  • Hot, strong, boiled chai, drunk over 20 minutes: kulhad. No contest.
  • Milky malai chai: mug. A full kulhad of heavy milk is genuinely heavy to hold, which is why we serve it that way too.
  • Cold coffee or a cold shake: glass. Clay holds heat in the wrong direction and your drink goes lukewarm.
  • Carrying tea 30+ minutes: a paper cup with a sleeve. Honest answer: clay loses to cardboard for travel.

The paper-cup problem

Paper cups are not a design choice, they are a throughput decision. Filling a paper cup takes a second; filling a kulhad, brushing it and setting it down takes four. At two hundred cups a day, that difference is the difference between one person behind the counter and two.

So paper is reasonable in a railway-station counter and a poor choice in a place where people sit down. It is also why finding a genuinely good kulhad chai in a city is sometimes hard — the good version is slower to serve, and speed always wins when someone is doing the maths.

Frequently asked questions

Is a kulhad cup better than a glass cup for tea?

For hot chai, yes, measurably. Unglazed terracotta holds heat longer than glass and adds an earthy note. For cold drinks, glass is better, because clay holds heat in the wrong direction and a cold drink in a kulhad goes lukewarm fast.

Does a kulhad cup keep tea hot longer?

Yes. Porous clay is a slower conductor than glass or steel, and a kulhad will still be uncomfortably hot several minutes after a steel tumbler has become drinkable. This is the practical reason people like kulhad chai.

Are kulhad cups dishwasher safe?

No. Unglazed clay absorbs detergent and gives it back into the tea. Wash with hot water and a brush, dry completely, and retire a daily-use cup after a few months.

Why do some tea shops serve chai in paper cups?

Speed and volume. A paper cup is faster to fill than a clay one and does not need washing, which matters at a counter doing hundreds of cups a day. The cost is that the tea tastes thinner and cools much faster.

Come try it

The only way to settle this is to drink it

Both our Bargarh outlets are open 7:00 am to 11:00 pm, every day. Ask for the Bargadiya Special in a kulhad and see whether you agree with us.

Chaiyo Bar outlet near the Private Bus Stand, Bargarh, decorated with balloons

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