Glass Cha Hai (Fairness Cup) boil and serve-build in filter

A Cha Hai (茶海), also called a Gong Dao Bei (公道杯) or fairness cup, is the small pitcher you pour your brewed tea into so every cup is even in strength.

This clever glass Cha Hai does more than serve — it brews, boils and serves all in one. Made from heat-resistant borosilicate glass with a 360° clear view of your tea, it works as both a brewing cup and a serving pitcher.

It has a built-in crescent glass filter, moulded seamlessly into the body with fine straining holes, so leaves are held back neatly as you pour — no separate strainer needed.

• Material: heat-resistant borosilicate glass
• Function: brew, boil and serve in one
• Filter: built-in seamless crescent glass strainer
• Capacity: 280ml

Pair it with a Yixing zisha teapot or a gaiwan for a complete gong fu table.