Notes from Vessel: A Gathering of Clay, Craft & Ceremony. Part One.
Over the first weekend of Vessel, Colin taught five classes. Different subjects, different teas, different rooms of people. One question kept surfacing in all of them, usually because someone in the room asked a version of it: which clay is best?
It is the wrong question.
The Wrong Question
Most people arrive at teaware with a shopping list. Which clay is best. Which pot is correct. What to buy first. The questions are reasonable and they lead nowhere, because they assume there is a right answer waiting to be looked up.
The real question is this: what does this vessel do to the tea, and is that what you want it to do?
Teaware is not decoration arranged around a practice. Every choice the maker made, in the clay and the walls and the shape and the spout, arrives in your bowl along with the tea. The vessel is in conversation with the leaves.
The Question Reverses
Once you have asked what a vessel does, you notice the question turning around. You stop asking what you want from a vessel and start asking what the tea wants from one.
You go to brew something one way and everything in the tea objects. Some teas refuse a side handle into a bowl. Some teas refuse everything except leaves in a bowl, and will tell you so. A few resist gongfu, which is rare, since gongfu usually brings out the best in a leaf. Some want nothing but a long slow boil.
Is this a tea for stillness, spaciousness, sitting quietly with something? Or is it a tea that wants to be brewed skillfully, where precision is how you honor it? The first points toward a bowl. The second points toward gongfu. The answer moves with the season, the hour, and who is at the table.
Four Places to Start
Four things will improve your tea. They are also the four places to begin, and there is nothing waiting past them.
Leaf
Choose organic, loose leaf tea. Those are the first criteria and they eliminate a great deal of what is on the market, much of which carries pesticides, herbicides, and fertilizers straight into the bowl.
Old growth material carries more qi and more medicine, and you can usually feel the difference: the energy is more robust, and it arrives with more force. Verifying old growth is another matter, and close to impossible from the outside. Even in the forests, a stand of trees described as three to five hundred years old may be a mix of a few old trees and a great many grafted clippings, which are not grown from seed and do not behave the same way. There are signs to read at the base of a trunk, but they require being there.
So the practical answer is not technical. Find a few vendors who tell you the truth about what they sell, and stay with them.
Water
Good clean spring water will elevate a tea immediately. The right water can take a mediocre tea and make it good. That is easy enough to test.
Some water simply refuses to work with some tea. A local spring can produce a beautiful oolong and flatten a dark puerh completely. The minerals are the reason. What is dissolved in the water interacts with what is in the leaf, and not every combination works. Keep that in mind before you decide a tea is bad.
Getting to know a spring near you is one of the better investments available in tea. Temperature and steep time belong here too. Both are questions about what the water is doing.
Vessel
A vessel can be clay, porcelain, glass, or metal. Glazed or unglazed. Thick-walled or thin. Each combination hands you a different tea from the same leaves, and most people never notice, assuming the leaf is doing all the work.
This is the one most commonly skipped. Everything below is about it.
Attention
This comes last on the list and, in some ways, matters most.
The practice is small. Ten or fifteen minutes in a day where you do nothing else. Three pours in silence, leaves in a bowl, no screen. What you are protecting in that window is your own capacity to notice. Nothing you buy can supply it. As technology takes over more of ordinary life, guarding a piece of the day this way stops being an indulgence and starts being upkeep.
Inside that window there is one question to hold: what is this tea asking of me?
What a Vessel Does
Every piece of teaware arrives with decisions already made in it. The maker settled them before it reached you. Each one has a consequence you can taste.
Porosity
Some clay keeps a tea's edges sharp. Some clay rounds them off and turns the water softer.
Zisha is the clearest example of the second kind. It polishes water noticeably, turning it milky and silky, and you do not need a refined palate to catch it. The experiment takes five minutes. Pour plain hot water through a zisha pot and through a glass pitcher, into two bowls, and taste them side by side. The zisha water is rounder, and no tea was involved.
Porous unglazed clay also absorbs oils from the tea, session after session. This is why a porous pot should be dedicated to one category of tea. One for dark teas, one for light. A pot that has spent two years absorbing aged puerh will carry some of that into an oolong.
If you own only one unglazed pot and want to brew across categories, pull the leaves out the moment you are done, even if the tea still has more to give. Leaves left sitting for hours in porous clay leave more of themselves behind. Sometimes the right move is to abandon a tea that still had pours in it.
Wall Thickness and Thermal Mass
Thick walls hold heat and ground a tea.
Picture a heavy, dark, tank-like pot, and heavy dark bowls to drink from. Everything about that setup has weight to it, and weight suits a particular kind of tea: earthy, dark, steady. Forest floor teas, the ones that taste of wet ground and mushrooms and things growing underground. Those teas ask for that mass and they are diminished without it.
Thin walls do the opposite. Refined, thin-walled wares, gaiwans, lighter side handles, small precise pots, catch volatile oils and subtle aromatics before they escape. Delicate florals want delicate wares. Put a fine oolong in a tank and the aromatics that were the reason to drink it disappear.
Even the color of the ware plays into this. It sounds like superstition until you compare a light tea in a dark bowl against the same tea in a pale one.
So the question to ask is whether this tea needs to stay hot between pours, or whether cooling is part of what it does. Thick walls maintain temperature across a long session. Thin walls let a tea cool and change as it goes. For some teas that is the point.
Shape and Room to Open
A balled oolong needs room. Those tightly rolled pellets have to unfurl to release what they have, and they need a bulbous, round pot with the space to do it. Deny that room and the leaves cannot open, so you lose the aromatics and the body that were the reason to choose the tea.
A tea that does not expand much is fine in a squatter pot. Aged puerh, grounding yin teas, anything that is already loose or broken or compressed differently, does not need the volume.
This one you can check in a second. Look at the dry leaf, imagine it at four times the size, and ask whether the pot in your hand could hold that.
Spout and Pour Speed
A cannon spout pours rapidly, and rapid is exactly what an oolong wants: in and out, no lingering.
Use a slow-pouring pot on a tea that needs to leave the water quickly and the tea turns bitter. It will taste like a brewing error, and it is one, except the error was choosing the pot. A more giving tea will forgive a slower pour.
If a tea keeps coming out bitter and you have already adjusted leaf and temperature and time, look at the spout.
Glaze, Inside and Out
A glazed interior and an unglazed interior do different jobs. Glaze preserves edges and aroma and keeps the vessel neutral, so no dedication is required and nothing accumulates. Unglazed clay softens, absorbs, and develops over years into something specific to what you have brewed in it.
Neither is better. One stays as it was and one changes with use.
The exterior is a separate question, and one anyone buying handmade ware should understand. Iridescent and metallic glaze effects come from very high concentrations of metal oxides, manganese in particular, often a quarter or more of the glaze recipe. That is what produces the sheen. It is also why those glazes belong on the outside of a piece. High-manganese and copper-heavy glazes are not considered appropriate for surfaces that hold food or drink, and reputable makers keep them off interiors.
So when you are looking at a beautiful iridescent pot, look inside it too.
The Materials
Zisha
Zisha is a deep purple-brown clay from Yixing, in eastern China. It is soft, absorptive, and smooth. It softens water and holds heat well enough to keep temperature high through a long session. That is most of why gongfu and zisha grew up together.
They have been together for over five hundred years. Master Lin, who has taught gongfu in Kuala Lumpur for more than fifty years, answers the question of whether some better clay might exist with a question of his own: who wants to break up a five-hundred-year-old relationship?
All of which is true, and you still do not need a zisha pot. Plenty of contemporary ceramicists work in other clays and make pots that brew beautifully.
The Other Yixing Clays
Zisha is a family of clays, and the members behave differently.
Zini is the workhorse, purple-brown and moderately porous. It is the most common and the most forgiving, at home with aged puerh, roasted oolong, and red tea.
Hongni is red, denser, and lower in porosity, with strong heat retention. That density brightens aromatics, so it suits lighter oolongs and red teas.
Duanni is the pale one, beige through yellow-green, and the most porous of the three. High porosity mellows a brew and softens astringency, so it serves young sheng puerh, green tea, and white tea well.
The differences are real without being dramatic. None of them will rescue a badly chosen shape or a slow spout.
Reading a Zisha Pot
The counterfeit market for zisha is enormous. China produces world-class counterfeits of everything from Rolex watches to puerh cakes, and teaware is no exception.
The most useful tell is how light behaves on the surface. A fake tends to be reflective, bouncing light back at you, often because it has been polished or waxed to look finished. Real zisha seems to gather the light inside the pot instead. Once you have seen the two side by side, the difference is obvious.
Two more: the symmetry of the form, which is where the hand of a serious maker shows, and the feel of the clay, which should have a faint sandiness rather than a slick, glassy smoothness.
There is a whole further study in the shapes. Zisha forms track what was happening culturally and politically at the time they were made, so a pot can be roughly dated by its silhouette. The flat-topped, angular styles came in with Mao. They look like small tanks, all right angles where earlier forms had the rounded edges you find in nature, and the aesthetic was of a piece with the rest of it: cut your hair, wear the uniform, fall in line. They are also, as a practical matter, irritating to get the lids off.
Porcelain
Porcelain softens water and lifts clean aromatics, holding a tea's edges rather than rounding them off.
Thin porcelain concentrates the aroma of a high-oil oolong and lets it emerge. Small, high-quality porcelain bowls count among the four foundations of gongfu for that reason, alongside the Yixing pot, the tea boat it sits in, and the charcoal stove. A flat tray and a jianshui for wastewater round out a working table.
Young sheng puerh in a porcelain gaiwan does something no other vessel manages, and it is the quickest way to understand what porcelain is for. Colin spent eighteen years inside a tradition that did not permit gaiwans, and had to unlearn the rule before finding out he loved brewing in one.
Porcelain and gongfu both want small groups. Brewing subtle teas for a crowd means losing control of the variables that were the reason to brew that way. Past four or five people, switch to bowl tea or a long boil and lean into being together.
Cast Iron
Cast iron brings a different element in entirely.
Finish the last pours of an aged puerh in an antique iron tetsubin and the tea changes character, with structure and woodiness pushed forward and the softer notes receding. The result is good. Clay would still have served that tea better, softening it and drawing out what the iron suppressed.
Both of those are true at once. Liking a result and preferring a different one are not in conflict.
Stainless Steel
Stainless steel is the material tea people dismiss fastest.
Master Lin boils water in high-grade German steel for a few varietals, Dan Cong and Tieguanyin among them, because with aromatic teas the steel lifts certain notes rather than rounding them. He calls it bending the notes up. The reason he gives is the only one gongfu needs: it makes better tea.
That is the rule underneath all of it. If it makes better tea, do it.
Where This Goes
None of this came from a shopping guide. It came from years of paying attention to what happened in the bowl.
Practice comes first. The questions and the knowledge come out of the practice.
There is a great deal more in those five classes than one piece holds. Water and heat. The four brewing methods and how to choose between them. The vessel through the five elements. How a piece of teaware comes to you instead of you going out to get it. Those are ahead.
For now, one thing to carry to the table: ask the teaware what it wants to brew.