The Complete Guide to Fairness Cups (Gongdao Bei): Capacity, Materials, and Serving

A fairness cup might just look like a temporary vessel for your brewed tea, but in a true Gongfu tea ceremony, it is the key to ensuring even flavor, smooth serving, and a graceful hosting experience. With every steep from a gaiwan or teapot, the beginning and end of the pour naturally have different concentrations. If you pour directly from your primary brewing vessel into each guest’s cup, the first and last cups will taste drastically different.

The purpose of a fairness cup—known as Gongdao Bei (公道杯) in Chinese—is to collect the entire brew first, blending the tea liquor before evenly distributing it to each drinker. This ensures everyone gets to enjoy the exact same, “fair” cup of tea.

Many beginners focus solely on aesthetics or simply buying the largest glass pitcher they can find. However, they often overlook practical questions: How big is your gaiwan? How many people are drinking? Can the pitcher hold a full steep without spilling? Does the spout drip? Will the handle burn your fingers? Is it easy to clean? Is it stable on the tea tray? This guide will walk you through everything you need to know about fairness cups—from capacity calculations and material comparisons to pouring techniques and beginner mistakes—helping you find the perfect companion for your daily tea practice.

The Short Answer: How to Choose a Fairness Cup Without Regrets

If you just want a reliable, versatile pitcher to start with, remember this rule of thumb: The capacity of your fairness cup should be able to hold an entire steep from your main brewing vessel, plus an extra 30-50% of breathing room. For your first pitcher, we highly recommend clear glass with a well-defined spout, an ergonomic grip, and a stable base.

Question	Recommendation	Reason
What material should I buy first?	Clear Glass	Allows you to see the tea color and judge concentration. It also matches any tea setup seamlessly.
How do I choose the capacity?	1.3 to 1.5 times the size of your brewing vessel	Ensures you can hold a full steep safely without spilling when you pour.
What pairs well with a 100-120ml gaiwan?	A 180-250ml fairness cup	Holds the liquid perfectly while being easy to distribute into 2-4 tasting cups.
Does it need a handle?	Not strictly, but recommended for beginners	Handles protect your fingers from the heat and offer better pouring stability.
Is a Fairness Cup the same as a “Cha Hai”?	Yes, they are mostly interchangeable in daily use	“Cha Hai” (Tea Sea) sometimes refers to larger pitchers or even tea tray basins, while “Fairness Cup” emphasizes the act of distributing tea equally.
Should I use a tea tray?	Yes, a tray or dry-brew mat is recommended	Keeps the serving process stable, catches stray drops, and maintains a clean table.

What is a Fairness Cup? Why Not Pour Directly?

A fairness cup, also known as a tea pitcher or Cha Hai, acts as the bridge between your primary brewing vessel and your tasting cups. When brewing Gongfu tea, you first empty all the tea from your gaiwan or teapot into the pitcher, and from there, pour it into the individual tasting cups. While it seems like an extra step, it solves three major problems: uneven flavor, chaotic serving, and poor pouring control.

First, the tea poured at the beginning of a steep is lighter than the tea poured at the end. Pouring directly means the first guest gets a weak cup and the last guest gets an overly bitter one. The fairness cup homogenizes the brew. Second, it makes serving stress-free. As the host, you only need to focus on quickly decanting the gaiwan before it over-steeps, without having to aim carefully into tiny, scattered cups. Third, it allows you to observe the tea. A transparent glass pitcher is perfect for appreciating the liquor’s color, clarity, tea hairs, and changing concentration over multiple steeps.

For beginners, a fairness cup isn’t an optional decorative item—it’s an essential tool that brings stability to your brewing. Especially when using a gaiwan, it prevents burnt fingers, reduces spills, and brings a sense of order and elegance to your tea table.

Fairness Cup vs. Cha Hai: What’s the Difference?

Many wonder if a “Gongdao Bei” (Fairness Cup) and a “Cha Hai” (Tea Sea) are the exact same thing. In everyday conversation, they are used interchangeably to describe the vessel that catches and distributes tea. However, if we look closely at the terminology, “Fairness Cup” focuses on the concept of fairness—giving every guest an equal brew. “Cha Hai,” on the other hand, translates to “Tea Sea” and can sometimes refer to larger pitchers, or in certain regional tea contexts, the tea tray or basin that catches waste water.

If you are a beginner, don’t get bogged down by the semantics. When shopping, just make sure the vessel can do its job: catch a full steep, pour without dripping, feel stable in the hand, match your brewer’s capacity, and look harmonious on your table. If it checks those boxes, it’s a great pitcher.

Choosing the Right Capacity: Match Your Teapot, Then Your Guests

The most common mistake when buying a fairness cup is choosing the size based solely on the number of drinkers, rather than the size of the primary brewing vessel. The pitcher’s first job is to hold the entire steep; its second job is to distribute it. If the pitcher is too small, you’ll have to pause your decanting, causing the tea left in the gaiwan to over-steep. If it’s too large, the tea will sit in a thin layer at the bottom, making it awkward to pour and throwing off the visual proportions of your tea table.

Brewing Vessel Capacity	Suggested Pitcher Capacity	Best Scenarios
80-100ml (Small Gaiwan/Teapot)	150-200ml	Solo drinking, brewing Yancha (Rock Oolong), small-batch tasting
100-120ml (Standard Gaiwan)	180-250ml	1-3 people daily brewing; the most common setup
130-150ml (Large Gaiwan/Teapot)	250-350ml	3-4 people serving, brewing White Tea, Black Tea, or Ripe Puerh
180ml+ (Large Teapot)	350ml+	Large tea gatherings, large-format brewing, serving many guests

In practice, do not buy a pitcher that has the exact same listed capacity as your gaiwan. Gaiwan capacities are often measured to the brim, and tea leaves take up space and absorb water. You also need safe “headroom” so the tea doesn’t slosh out when you move it. The safest approach is to choose a pitcher that is 1.3 to 1.5 times the size of your brewing vessel. For a standard 120ml gaiwan, a 200ml pitcher is perfectly comfortable. If you frequently host 3-4 people, consider going up to 250ml.

Which Material is Best? Glass for Clarity, Porcelain and Pottery for Style

The material of your fairness cup affects your ability to observe the tea, the tactile feel, heat retention, ease of cleaning, and the overall aesthetic of your tea setup. For beginners, glass is highly recommended because it provides immediate visual feedback. Once you establish a specific stylistic theme for your tea table, you can explore white porcelain, celadon, or stoneware.

Material	Advantages	Things to Note	Best For
Glass	Clearest view of the liquor color; matches any setup; easy to clean	Fragile; thin glass transfers heat quickly, requiring care if handleless	Beginner’s first pitcher, tea tasting, daily gaiwan use
White Porcelain	Clean, elegant, pairs beautifully with porcelain gaiwans	Harder to judge the exact tea concentration compared to glass	Minimalist setups, all-white setups, light Oolongs
Celadon / Light Glaze	Strong aesthetic appeal, soft colors, matches glazed tasting cups	Glazes that are too dark will obscure the tea liquor color	Curated tea spaces, enhancing visual table aesthetics
Stoneware / Coarse Pottery	Substantial weight, rustic and grounded visual appeal	Can absorb odors; requires more careful cleaning and drying	Aged teas, heavily roasted teas, vintage-style setups

If you are just learning how to use a gaiwan, a clear glass pitcher is the most pragmatic choice. If you are curating a specific ambiance—like a cool, minimalist vibe, a rustic wabi-sabi feel, or a classic traditional look—your pitcher should be chosen alongside your tasting cups, tea tray, and floral arrangements.

Design Details: How the Spout, Handle, Rim, and Base Affect the Pour

The most important feature of a fairness cup isn’t an eccentric shape—it’s a smooth pour. When shopping, you must evaluate four distinct areas: the spout, the handle (or grip), the width of the rim, and the stability of the base.

The Spout: Focused Flow, No Dripping

A high-quality spout shapes the pouring liquid into a stable, neat stream, ensuring it doesn’t splash when poured into small tasting cups. Spouts that are too blunt, too thick, or poorly angled tend to drip tea down the front of the pitcher and onto your tray. If you use tiny tasting cups, a precise, sharply defined spout is critical.

The Handle: Stability vs. Minimalism

Pitchers with handles are much friendlier for beginners, offering a sense of security when pouring piping hot tea. Handleless pitchers look incredibly sleek and minimalist, but you must pay attention to the thickness of the glass and the curve of the body to ensure you won’t burn your fingers. If you have smaller hands, frequently brew high-temperature teas, or serve multiple people at once, a handled pitcher is the safer bet.

The Rim: Wide for Cleaning, Narrow for Aroma

Unlike a tasting cup, the fairness cup isn’t primarily meant for smelling the tea’s aroma, so a narrow opening is rarely necessary. In daily use, a wider rim is much better: it makes the pitcher easier to clean, easier to pour into from a gaiwan, and easier to wipe dry. A rim that is too small turns scrubbing away tea stains into a frustrating chore.

The Base: Stable on the Tea Tray

Your fairness cup will frequently be used around hot water, wet hands, and damp tea trays. An unstable base will make your entire brewing process feel tense. Check if the bottom is perfectly flat and whether it slides easily on your tray. Pitchers that are very tall and narrow have a high center of gravity when full, making them prone to tipping—not ideal for beginners.

How to Use a Fairness Cup: Collect First, Then Distribute

The workflow is simple: empty the primary brewing vessel entirely into the fairness cup, and then pour from the fairness cup into the tasting cups. The two skills to master here are “decanting completely” and “distributing evenly.” You must ensure every drop of water leaves the gaiwan so the leaves don’t continue to stew. Then, you use the pitcher to give everyone an equal portion.

When pouring, you can fill each cup one by one, or use the traditional “patrolling” method (Xun Bei)—pouring a little bit into the first cup, then the second, then the third, and looping back until they are all equally full. For solo drinking or small groups, pouring one by one is fine. For larger groups, the looping method is safer to ensure perfect equality. Either way, a fairness cup gives you infinitely more control than attempting to serve directly from a hot, heavy teapot.

Beginners should arrange their tasting cups in a tight row or a gentle arc to minimize the distance the pitcher has to travel. Don’t spread the cups out too far, and keep them away from the edge of the table. If there are water droplets on the bottom of your pitcher after pouring, quickly wipe them on a tea towel before placing it back down. These small habits make your tea presentation look incredibly clean and professional.

Pairing with Gaiwans, Zisha Teapots, and Tea Trays

A fairness cup does not exist in isolation; it works in tandem with your brewer, your cups, and your tray. Gaiwan setups absolutely need a fairness cup because gaiwans decant very quickly, releasing a large rush of water that needs to be caught instantly.

Zisha (Yixing) clay teapots also pair wonderfully with fairness cups. Especially when hosting guests, pouring from the teapot into the pitcher first prevents the tea from over-steeping while you take the time to fill each guest’s cup. If you are using a Zisha pot to brew Ripe Puerh, Rock Oolong, or heavily roasted teas, a glass fairness cup allows you to appreciate the thick, dark liquor that the clay pot hides.

Regarding your tea tray, place your fairness cup between your main brewing vessel and your tasting cups to keep your hand movements short and natural. In a dry-brew setup, you can place it on a small coaster or cloth. In a wet-brew setup (with a draining tray), try to keep the pitcher away from the main drainage area so the base doesn’t sit in puddles.

Cleaning and Storage: Preventing Tea Stains and Chips

Because it holds tea daily, your pitcher is highly susceptible to tea stains, hard water marks, and residue around the rim. If a glass fairness cup isn’t rinsed promptly, it will develop a dull, yellowish film. White porcelain and celadon will trap brown stains inside the spout and around the inside bottom.

We recommend rinsing your pitcher with warm water immediately after your tea session, before the residual tea dries. If necessary, use a soft sponge to gently wipe the inside, then let it air dry upside down or wipe it with a microfiber cloth. Never use harsh abrasive scrubbers or steel wool on glass or glazed surfaces, as micro-scratches will make the pitcher stain even faster in the future. Spouts can be cleaned with tiny, soft spout brushes, but be gentle. For porous stoneware pitchers, make sure they dry completely in a well-ventilated area to prevent them from smelling musty.

When storing, remember that fairness cups are fragile. The delicate glass spout, rim, and handle are the most common points of breakage. Do not stack them tightly against gaiwans or heavy teacups. If you are traveling with your tea gear, always use a padded, compartmented travel bag to protect the protruding spout and handle.

Buying Checklist: 10 Things to Check Before Purchasing

Checklist Item	Ideal State	Common Pitfalls
Capacity	1.3 to 1.5 times your brewer’s volume	Too small (overflows) or too large (awkward pouring)
Spout	Focused water stream, cuts off cleanly	Drips constantly, water scatters, rim is too blunt
Handle	Comfortable grip, heat resistant, natural pouring angle	Handle is too tiny, slippery, or makes the pitcher off-balance
Rim Opening	Wide enough for easy cleaning and observing	Too narrow, making tea stains impossible to scrub out
Material	Glass is the most practical first choice	Buying purely for looks while sacrificing practicality
Base	Flat, stable, won’t slide easily	Tall and skinny design that tips over when bumped
Weight	Easy to maneuver one-handed when completely full	Looks great empty, but painfully heavy when full of tea
Visibility	Clear or lightly colored to reveal tea liquor	Dark or opaque walls that hide the tea’s concentration
Visual Proportions	Scales harmoniously with your gaiwan and tray	Beautiful on its own, but looks giant or tiny on your table
Durability/Storage	Spout and handle are reasonably sturdy	Overly sharp or paper-thin details that chip easily in the sink

Common Mistakes to Avoid

Mistake 1: Buying a Pitcher That is Too Small

If your pitcher is too small, you cannot empty your gaiwan entirely in one go. The remaining tea leaves will sit in hot water, turning the next pour bitter. Always buy based on your primary brewer’s volume.

Mistake 2: Blaming Your Hands for a Drippy Spout

Some pitchers simply have bad hydrodynamics. If tea dribbles down the front of the glass no matter how you pour, the fault lies in the spout design, not your technique. Look for sharp, well-defined “beak” spouts.

Mistake 3: Buying Dark, Opaque Pitchers First

Dark stoneware or heavy glazes look incredible, but beginners rely on visual cues to learn how long to steep their tea. Clear glass accelerates your learning curve. Build your aesthetic collection later.

Mistake 4: Placing the Pitcher Too Far Away

If the fairness cup is placed far across the table, you have to move a dripping, hot gaiwan through the air, increasing the chance of burning yourself or making a mess. Keep the pitcher right next to the gaiwan.

Mistake 5: Putting It Away Wet

Water spots on glass look messy, and wet stoneware breeds odors. Promptly rinsing and drying your pitcher ensures your next tea session starts fresh and elegant.

Conclusion: The Right Pitcher Elevates Your Tea Practice

The fairness cup might not be the most glamorous item on the tea table, but it is undoubtedly the piece that brings the most stability to your brewing routine. It guarantees every guest enjoys the perfect flavor profile, takes the stress out of serving, and gives you a beautiful window into the tea’s visual journey.

For your first fairness cup, start with clear glass, a 180-250ml capacity, a crisp pouring spout, a comfortable handle, and a flat base. When shopping, don’t just ask, “Does it look nice?” Ask, “Will it catch my tea safely, pour gracefully, and clean easily?” Once those criteria are met, this little pitcher will quickly become an indispensable ally in your daily tea ritual.

Fairness Cup FAQs

What is a fairness cup used for?

A fairness cup is used to collect the brewed tea from a gaiwan or teapot before distributing it into individual tasting cups. It blends the steep to ensure uniform concentration and makes pouring much easier.

Is a fairness cup the same thing as a Cha Hai?

In daily practice, yes, the terms are used interchangeably. “Fairness cup” (Gongdao Bei) emphasizes equal distribution, while “Cha Hai” (Tea Sea) can sometimes broadly refer to any tea pitcher or even a tea tray basin. For beginners, they mean the same thing: your serving pitcher.

How do I choose the right size?

We recommend a pitcher that holds 1.3 to 1.5 times the volume of your main brewing vessel. For example, a standard 100-120ml gaiwan pairs beautifully with a 180-250ml fairness cup, ensuring it catches all the liquid without overflowing.

Should my first fairness cup be glass or ceramic?

Clear glass is highly recommended for beginners because it allows you to see the exact color, clarity, and strength of the tea liquor. It is also aesthetically neutral and matches any setup. Ceramic or stoneware pitchers are better suited for those who already have a specific table aesthetic in mind.

Does a fairness cup need a handle?

It isn’t mandatory, but it is much safer for beginners. Handleless pitchers require a careful grip to avoid burning your fingers on the hot glass. A handle provides secure leverage, especially when serving multiple guests.

What should I do if my fairness cup drips?

First, adjust your pouring angle and speed. A confident, steady pour often prevents drips. If it still drips consistently, it is likely a design flaw in the spout. A good spout should have a clean, sharp drop-off to cut the water flow cleanly.

Do I need to use a tea tray with it?

It is highly recommended to use a tea tray, a dry-brew mat, or a thick cloth coaster. Decanting and serving tea naturally involves stray droplets, and a tray keeps your brewing area organized and your furniture safe.

How do I clean my fairness cup?

Rinse it with warm water immediately after your tea session before stains can dry. For stubborn marks, gently wipe the inside with a soft sponge. Never use abrasive steel wool, as it will scratch the surface. Let it air dry upside down or wipe it with a microfiber cloth to prevent water spots.