Chapter V · The Brewing · Section 2: A modern tea-science reading — reading “其沸如鱼目微有声为一沸缘边如涌泉连珠为二沸腾”

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Thesis

Read through modern tea science, “其沸如鱼目微有声为一沸缘边如涌泉连珠为二沸腾” is not a lab result but a set of variables: cultivar, soil, light and plucking standard.

Text

“When the water first boils — with bubbles like fish eyes and a faint sound — that is the first boil. When bubbles rise along the rim like a linked string of spring pearls, that is the second boil. When it surges and rolls like waves, that is the third boil.”

Context

三沸的辨识：初沸如鱼眼小泡微响；二沸如涌泉连珠沿边翻涌；三沸则大浪翻滚。

Evidence

• Collation: “腾波鼓浪"四库本作"腾波鼓浪”，各本一致；三沸的形容"鱼目"“连珠”"鼓浪"为历代注本反复申说之语。
• Existing readings: 吴觉农评三沸之说"最见经验"：一沸为初沸（约80℃），二沸为茶器冲泡最佳，三沸则水老气散。今人"水不可滚太久"的泡茶经验，正是此说的延续。

Analysis

Modern tea science would split “其沸如鱼目微有声为一沸缘边如涌泉连珠为二沸腾” into cultivar, soil, light and plucking variables. 吴觉农评三沸之说"最见经验"：一沸为初沸（约80℃），二沸为茶器冲泡最佳，三沸则水老气散。今人"水不可滚太久"的泡茶经验，正是此说的延续。 They remain testable, but only with their conditions attached.

Conclusion

The section does not give a universal rule. It demonstrates a method: read the text, the annotation and the Tang context together before making a modern claim.

Source: The Classic of Tea, Chapter V · The Brewing, section 2; the original is in the public domain.

The vessel is not background. 三沸的辨识：初沸如鱼眼小泡微响；二沸如涌泉连珠沿边翻涌；三沸则大浪翻滚。 The same leaf in a different bowl, grinder or sieve changes aroma and texture; vessel and tea are defined together.

Water and fire magnify the difference. The same leaf at a higher temperature or a longer steep changes the sweet-bitter balance; the text only becomes operational at the brewing stage.

In Tang context, 吴觉农评三沸之说"最见经验"：一沸为初沸（约80℃），二沸为茶器冲泡最佳，三沸则水老气散。今人"水不可滚太久"的泡茶经验，正是此说的延续。. Tea was tribute, medicine and monastery drink at once, not a standalone commodity; the conclusion cannot be transferred without that context.