Cold food powder (English spelling)

Japanese: 寒食散 - かんしょくさん（英語表記）Hán shí sǎn

This powdered medicine was widely taken during the Six Dynasties period in China. It was so named because after taking it, one should not eat or drink any hot food, with the exception of alcohol, and it was also called Gosekisan because it basically uses five types of mineral medicines: purple quartz, white quartz, red amethyst, stalactite, and stone sulfur. It was also used to treat some illnesses during the Han dynasty, but it became explosively popular after He Yan of the Wei dynasty, as people enjoyed the hallucinations that followed and believed they could become immortals.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

中国の六朝時代にさかんに服用された散薬。服用後には，酒だけを例外としてあたたかい飲食物をとってはならないためにこの名があり，また基本的に紫石英，白石英，赤石脂，鍾乳，石硫黄の5種類の石薬，すなわち鉱物性薬材を用いるところから五石散ともよばれた。漢代においても一部の病気治療に使用されたが，魏の何晏（かあん）以後爆発的に流行したのは，服用後の幻覚をたのしみ，また仙人となることができると信じられたからである。

出典　株式会社平凡社世界大百科事典第２版について　情報

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