How to Make It
Combine all of the ingredients in a small bowl.
Place the bean curd on a heat-proof dish in a steamer basket and steam for 10 minutes.
Meanwhile, heat a wok over high heat for about 30 seconds. Add the peanut oil and stir to coat. When a wisp of white smoke appears, add the scallions and stir-fry until bright green, about 30 seconds. Transfer to a plate.
Stir the sauce and add it to the wok. Cook over low heat until the sauce thickens and becomes dark and glossy. Stir in the scallions. Pour the sauce over the bean curd and serve.