Yixing Zisha Clay Types, Explained

"Zisha" is a family name, not a single material. Under it sit several distinct clays, each with its own iron content, its own shrinkage in the kiln, and its own effect on the tea you brew. Two pots of the same shape and the same price can brew noticeably different cups.

Here is what the names on a product page are actually telling you.

What "original ore" means

Original-ore clay (yuan kuang) is clay dug from the Yixing deposits and processed without blending in clay from elsewhere. It is the baseline claim for a serious pot, and it is the first thing worth checking. Clay that has been cut with cheaper material still fires, still looks like zisha at a glance, and still seasons — just more slowly and less evenly.

Zini — purple clay

The most common member of the family, and the one most people picture when they hear "zisha". Fired, it ranges from chocolate brown to a warm aubergine. Zini is the balanced all-rounder: it softens a harsh edge without smothering aroma, holds heat steadily, and seasons evenly.

It suits almost anything, which makes it the safe first pot. It is particularly good with aged raw puer, ripe puer, and roasted oolong.

Hongni and zhuni — red clay

Higher in iron, and fired to a bright brick or cinnabar red. Both shrink heavily in the kiln — zhuni famously so, which is why zhuni pots are small and why large ones are rare and expensive. The payoff is density: a thin-walled red pot rings high when tapped and pushes aroma forward rather than rounding it off.

Red clay is the choice for aromatic oolong, dancong, and black tea. Because the walls are thin and the clay is dense, warm the pot slowly — these are the pots most likely to crack from a sudden pour of boiling water.

Duanni — yellow clay

Dug from lower strata, lower in iron, fired to a pale yellow or oatmeal tone. Duanni is the most porous of the main clays and the most "breathing" — it rounds a cup noticeably and mutes the sharp top notes. That makes it good for ripe puer and for teas you find too edgy, and less good if you are chasing aroma.

It also stains. A duanni pot used with dark tea will darken unevenly at the rim and spout, which many people like and some do not.

The trade names you will also see

Beyond the three main families, workshops use names that describe a particular seam, colour, or grain. They are real materials, but the naming is not standardised, so treat them as descriptions rather than guarantees:

• Da Hong Pao clay — a rare, deep red clay. The name is shared with the famous tea and has nothing to do with it.
• Jiangpo clay — a zini variant with visible sand grain; feels slightly abrasive under the thumb and seasons with a matte, stony finish.
• Long Xue Sha ("dragon blood sand") — a red-brown sandy clay, coarse-grained, good heat retention.
• Black-gold sand — a zini with dark mineral particles that catch the light; visually striking, brews like a zini.
• Clear-water clay — a cleaner, more uniform zini, often used for larger or engraved pots.

Which clay for which tea

A rough starting point, not a rule:

• Ripe puer, aged raw puer — zini or duanni. Body and roundness matter more than aroma.
• Roasted oolong — zini, or red clay if you want the roast lifted rather than softened.
• Light aromatic oolong, dancong, black tea — hongni or zhuni.
• Green and white tea — honestly, porcelain. Zisha holds heat and mutes aroma, which is the opposite of what these teas want.

How to judge a pot without trusting the label

Tap the lid lightly and listen to the pitch. Look at the grain at the foot ring, where the clay is unpolished. Feel the inside of the spout. And ask what the potter means by the name — a good seller will answer plainly, because the clay is the least mysterious part of the pot once someone explains it.

All of our teapots list the specific clay they are made from, and our zisha cups follow the same convention.