Stir-frying with bran

Stir-frying (medicinal materials) in a wok with bran over a flame until a thick yellow-black smoke is given off. This process increases a medicinal’s capacity to fortify the spleen and stomach and causes oils that would otherwise cause side effects and unpleasant smells to be absorbed by the bran. Ovate atractylodes (Atractylodis Macrocephalae Rhizoma, 白朮 bái zhú) and bitter orange (Aurantii Fructus, 枳壳 zhǐ ké) may be processed in this way.