Oil pressed from rapeseed. Traditional Chinese rapeseed oil is dark, with a strong smell of its own, and is the basic oil of Sichuan cooking, fine for deep-frying; refined bottles are pale and mild.
Pressed from rapeseed (菜籽 = vegetable seed, specifically 油菜 oilseed rape). The dominant cooking oil across western China. Sichuan and Guizhou cuisine in particular use it raw-pressed (生菜油) for its grassy, slightly bitter punch.