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MENTAL MODEL · M1293

Decoction Timing

Decoction Timing
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Physical and chemical rules for decocting traditional Chinese medicine. Mineral and shell ingredients (e.g., gypsum, oyster shell) are difficult to dissolve and require 'decocting first' for 30 minutes; aromatic and volatile ingredients (e.g., mint, amomum fruit) lose efficacy with prolonged boiling and should be added 'later' 5 minutes before turning off the heat.

SCAFFOLDING EFFECT

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Layered extraction. Boiling medicine is not like making soup; it is a chemical experiment. Active ingredients are either in stones (requiring long, high heat) or in aromas (dissipating upon heat). It is necessary to use time differences to simultaneously retain active ingredients from different dimensions in the decoction.

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Different components have different tolerances to heat/time: insoluble minerals require prolonged decoction to release, while volatile aromatics dissipate with prolonged boiling. The time difference (decoct first/add later) is a physical metaphor for 'heterogeneous elements requiring differentiated treatment'.

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Source support: Explicit

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