The fairness cup: why every gongfu setup needs one

Have you noticed that extra vessel sitting between the teapot and the cups in a gongfu tea setup? The one that looks like a small pitcher? Most people assume it is decorative. It is not. It is doing one of the most important jobs on the tea tray.

A fairness cup — called gōngdào bēi (公道杯) in Chinese, which literally means "fairness cup" — is a small pitcher used to hold brewed tea after it leaves the teapot or gaiwan (盖碗, gàiwǎn) and before it is poured into individual tasting cups. Its job is simple: make sure every cup gets tea of the same strength. Without it, the first cup poured from a teapot will be lighter and the last cup will be much stronger, because the tea keeps steeping while you pour. The fairness cup solves this by receiving all the tea at once, stopping the brew, and letting you distribute evenly.

It is also called cháhǎi (茶海, "tea sea") in some regions and "sharing pitcher" in English. Whatever you call it, once you use one, you will wonder how you ever poured without it.

How to use a fairness cup (and mistakes to avoid)

The process is not complicated, but getting the details right makes a noticeable difference to your tea.

Step 1: Warm the fairness cup. Before you start brewing, pour hot water into the fairness cup, swirl it around, and discard. This keeps the tea hot when you pour it in. Skipping this step means the cold glass absorbs heat from your tea and drops the temperature by several degrees.

Step 2: Brew in your gaiwan or teapot. Add leaves, pour water, and steep for the appropriate time. For gongfu brewing (功夫泡, gōngfū pào), this is usually short — 10 to 30 seconds for the first few infusions.

Step 3: Pour everything into the fairness cup. Empty the gaiwan or teapot completely. Do not leave any liquid sitting with the leaves. This is the most common mistake I see at our Tea Bar — people pour half, pause, then pour the rest. Those extra seconds of contact mean the remaining tea over-steeps, making the next round more bitter than it should be.

Step 4: Pour from the fairness cup into tasting cups. Fill each cup about 70% full. If you are serving three or four people, rotate as you pour — a little in each cup, then go back — to keep the concentration even. The tea at the bottom of the fairness cup is slightly stronger than the top, so rotating helps.

Step 5: Smell the empty fairness cup. After pouring, bring the empty cup to your nose. The residual warmth releases aromas you might miss from the drinking cup. Glass fairness cups are particularly good for this because they retain less scent between rounds.

Common mistakes:

• Leaving tea in the teapot. The tea keeps extracting. Your next infusion will taste harsh because the leaves were sitting in liquid between rounds.
• Pouring straight from teapot to cups. The first cup will be weak, the last one bitter. The whole point of the fairness cup is to equalise this.
• Using a fairness cup that is too small. Your fairness cup should hold at least as much as your teapot. If you brew 150ml, use a 200ml+ fairness cup to avoid overflow.
• Forgetting to warm it first. Cold glass pulls heat from the tea. This matters more than you might think, especially with green and white teas that are brewed at lower temperatures.

Choosing a fairness cup

Fairness cups come in three main materials, and each has a practical trade-off:

Glass is the most popular choice and the one we use most at the Tea Bar. You can see the tea colour clearly, which helps you judge brew strength before pouring. Glass also does not absorb flavours between sessions, so you can switch from a delicate white tea to a heavy pu-erh without carryover. A good glass fairness cup runs $35–45.

Ceramic retains heat better than glass and suits cooler weather or teas that need higher temperatures. It is a good choice if you mainly drink oolong (乌龙茶, wūlóng chá) or black tea — called red tea (红茶, hóngchá) in China because of its reddish brew colour. The downside is you cannot see the colour through the walls.

Clay (including Yixing purple clay) absorbs flavour over time, which some people like for dedicated setups — using one clay fairness cup only for pu-erh, for example. But for general use, glass is more practical.

Size matters more than material. Match your fairness cup to your teapot or gaiwan. A 150ml gaiwan pairs well with a 200–250ml fairness cup. Too small and you will overflow. Too large and the tea cools too fast spread across the bottom.

The fairness cup is one of those tools that seems unnecessary until you use it — then it clicks.

At our Tea Bar, we use glass fairness cups for most sessions because they let customers see how the tea colour changes with each infusion. For a Big Red Robe oolong, the first pour might be a bright amber; by the fifth, it mellows to a soft gold. Watching that change is part of what makes gongfu brewing engaging.

Common questions about fairness cups

Can I use a fairness cup with a regular teapot?

Yes. Any teapot that brews loose leaf tea benefits from a fairness cup. You do not need a full gongfu setup. Even if you brew in a large pot, pouring into a fairness cup first gives you more control over strength.

Is a fairness cup the same as a milk jug?

They look similar but serve different purposes. A fairness cup is meant for pouring immediately after brewing, not for storing liquid. The spout is designed for a clean, drip-free pour into small tasting cups.

Do I need a fairness cup if I brew for just myself?

It still helps. Pouring all the tea out of your gaiwan into a fairness cup stops the brew instantly. If you drink straight from the gaiwan or leave liquid in it between sips, the tea will over-steep. For solo sessions, a small 150ml fairness cup works well.

How do I clean a glass fairness cup?

Rinse with hot water after each session. For tea stains, soak in warm water with a little baking soda. Avoid soap if you can — glass does not absorb flavours, so hot water is usually enough.

Teaware mentioned in this article

• Blue Handle Fairness Cup
• Wooden Handle Fairness Cup
• Yuanbao Fairness Cup
• Blue and White Gaiwan Tea Set

Browse our full fairness cup collection and gaiwan collection.

Published: March 2026 | Last updated: June 2026