Pouring into a fairness pitcher vs pouring straight into cups

The first liquor out of a vessel is weaker than the last, so pouring a single infusion into several cups in sequence gives everyone a different drink. The pitcher exists to solve exactly that, and its Chinese name — gong dao bei, ‘fairness cup’ — says so.

equipment

What is being compared

Point by point

AspectFairness pitcher (cha hai)Tasting cup
What it solvesUneven strength between cups, by mixing the whole infusion before it is distributed.Nothing on its own. Pouring directly is where the unevenness comes from.
Number of drinkers it matters forTwo or more. For one drinker it is unnecessary.One, where every cup comes from the same pour anyway.
Effect on temperatureDrops it slightly, which is usually welcome with a small cup.Hotter in the cup, which for a 25 ml tasting cup can be too hot to drink promptly.
Effect on timingEnds the steep decisively, because the vessel is emptied in one movement.Extends it — the last cup steeped for as long as the pour took.
Judging the liquorA glass pitcher shows colour clearly, which is the usual reason for choosing glass.Colour is judged in the cup, against whatever glaze it happens to have.
SubstitutePouring back and forth between cups achieves the same evening-out, less elegantly.Traditional Chaozhou practice pours in a continuous circling motion across the cups for the same reason.

The short answer

For one person drinking alone the pitcher adds a vessel and solves nothing. For two or more it removes a real and noticeable inconsistency, and the circling pour is the free version of the same idea.

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