The Object That Makes Tea Fair
公道杯 — the "fairness pitcher" — exists to solve a small but real problem: tea steeped directly into separate cups never comes out evenly, since whichever cup gets poured first or last ends up stronger or weaker than the rest. The gongdao pitcher fixes that by being the one vessel everyone's tea passes through before it reaches a cup — the brewed tea goes in first, gets mixed evenly, and only then gets shared out, so every guest at the table drinks from the same batch, at the same strength, regardless of pour order.
This is one of the few pieces of teaware whose entire reason for existing is etiquette rather than flavor or form. It changes nothing about how the tea tastes — it just makes sure no one at the table gets a worse cup than anyone else.
This version is octagonal, high-fired sweet-white glaze, deliberately thick-walled, plain enough to disappear into the background of a tea session — which is, in a way, exactly the job description.