Brewing saucepan vs teapot

The vessel for boiling tea against the vessel for steeping it, and the choice is decided by the preparation rather than by preference. Every tea that is boiled with milk or spices needs an open pan; every tea that is steeped needs something that holds heat and separates leaf from water.

equipment

What is being compared

Point by point

AspectBrewing saucepanWestern teapot
What happens in itBoiling and simmering, with milk, spices or salt.Steeping, once, and then straining off.
OpennessOpen and watchable, which matters because milk rises without warning.Closed, which holds heat.
DepthDeep enough to take a rise.Irrelevant.
Preparations that require itMasala chai, noon chai, butter tea, salted milk tea, boiled dark tea.Everything steeped, from black tea to herbal infusions.
Named traditional formsThe Indian patila and the deep chai pan among others; the requirement is the same everywhere.Countless, and mostly a matter of style rather than function.
Substituting the otherA teapot cannot boil. There is no workaround.A pan can steep, badly, because it cannot be covered and strained conveniently.

The short answer

A great many failed attempts at chai come from trying to make a decoction in a steeping vessel, and there is no technique that compensates. The saucepan is not a downgrade from a teapot; it is the correct and traditional vessel for a whole family of preparations that a teapot cannot perform.

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