鍊土法
鍊土法
取好黄土如脂蠟者,暴乾擣篩,水淘如甘飲狀,攪數百遍,停一宿,去上清水。接取細泥,暴乾。其下麤者,更擣淘如前。破之如梅李大,猛火燒之三日,通赤如丹。畢寒之,更擣絹篩三斤加一斤黄丹,即是泥。又法:取黄土一斤,堅實細理者,擣絹篩,沸湯煮之三日。此泥擬黄帝九鼎丹中第一之丹流珠丹用。
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Text and scans: Shidian Guji (Peking University – ByteDance open ancient texts). Edition details are given per book. Shidian Guji
