《天工开物·中篇·膏液》
炒蓖麻子、菜子要用六寸深的平底锅比较合适，将子仁放进锅后不断翻拌。
凡炒诸麻菜子，宜铸平底锅，深止六寸者，投子仁于内，翻拌最勤。
For stir-frying castor beans and rapeseeds, a flat-bottomed pan about six inches deep is more suitable. Turn the seeds constantly after adding them to the pan.