What Is a Cha Hai, and Do You Need One?

A cha hai is a serving pitcher placed between the brewing vessel and the cups. Pour the complete infusion into it, then divide the liquor. This mixes the stronger and weaker parts of the pour, helping everyone receive a similar cup. Gong dao bei, often translated as fairness cup, is another common name.

What problem does it solve?

Tea continues extracting while you empty a gaiwan. Pouring directly into several cups can give the first cup a different strength from the last. Decanting into one pitcher brings the whole infusion together and separates it from the leaves at a clear endpoint. It also lets you set down a hot gaiwan before serving.

Match capacity to working volume

A 100 ml working infusion needs a pitcher with more than 100 ml of comfortable capacity, not just brim-full capacity. Around 150–200 ml is a practical match for a small gaiwan, provided it pours well. If your pitcher forces you to pause halfway through draining, it is too small for that recipe. For two 50 ml cups, a 100 ml infusion gives one round without filling either to the edge.

Glass, glaze or unglazed clay?

• Heat-resistant glass: lets you see liquor colour and sediment; check the manufacturer's temperature instructions.
• Glazed porcelain or ceramic: versatile across tea families and straightforward to clean.
• Unglazed clay: a more specialised choice whose behaviour depends on clay and firing. It can retain odours and is less convenient for switching between strongly different teas.

A handle can help keep your grip away from hot walls. A handleless pitcher must have a safe gripping area at the temperature you use. Do not judge usability from a photograph alone.

Check the spout

Look for a controlled stream and a clean stop. A wide opening makes it easier to receive the gaiwan's pour. The vessel should sit securely and be easy to rinse. A beautiful shape that dribbles down its wall is less useful than a simple pitcher that serves cleanly.

Do you need a strainer?

It is optional. A small strainer catches fragments from broken leaf or loosened compressed tea. Fine mesh can slow the pour and needs prompt cleaning. The tiny hairs on some white-tea buds are not automatically dirt; decide whether filtering improves your own drinking experience.

For a solo session

You can pour directly into one cup if it holds the full infusion. A pitcher becomes useful when you want to compare several small sips, serve more than one person or stop extraction before handling cups. It is a practical tool, not a condition of authentic gongfu brewing.

Rinse after use. Use appropriate mild cleaning for glass and glazed ware, following maker guidance; treat unglazed clay separately. Let every piece dry completely before storing it.