- Microwave water, 1/2 teaspoon salt, and dried mushrooms in covered large bowl until steaming, about 1 minute. Let sit until softened, about 5 minutes. Drain mushrooms in fine-mesh strainer, reserving liquid; set aside soaked mushrooms and return liquid to large bowl.
- Place peppercorns in small bowl and microwave until fragrant, 15 to 30 seconds. Let cool completely. Once cool, grind in spice grinder or mortar and pestle (you should have 11/2 teaspoons).
- Using side of chef’s knife, lightly crush white parts of scallions, then cut scallions into 1-inch pieces. Place tofu and scallions in bowl with reserved mushroom liquid and microwave until steaming, 5 to 7 minutes. Let stand while preparing remaining ingredients.
- Process garlic, ginger, chili paste, and black beans in food processor until coarse paste forms, 1 to 2 minutes, scraping down sides of bowl as needed. Add 1/4 cup vegetable oil, chili powder, and 1 teaspoon peppercorns and continue to process until smooth paste forms, 1 to 2 minutes longer. Transfer spice paste to bowl.
- Place reserved soaked mushrooms and fresh shiitake mushrooms in now-empty processor and pulse until finely chopped, 15 to 20 pulses (do not overprocess). Heat 2 tablespoons vegetable oil and mushroom mixture in large saucepan over medium heat, breaking up mushrooms with wooden spoon, until mushrooms begin to brown and stick to bottom of saucepan, 5 to 7 minutes. Transfer mushroom mixture to bowl.
- Add remaining 2 tablespoons vegetable oil and spice paste to now-empty saucepan and cook, stirring frequently, until paste darkens and oil begins to separate from paste, 2 to 3 minutes. Gently pour tofu with mushroom liquid into saucepan, followed by hoisin, sesame oil, and mushroom mixture. Cook, gently stirring frequently, until dish comes to simmer, 2 to 3 minutes. Whisk soy sauce and cornstarch together in small bowl. Add cornstarch mixture to saucepan and continue to cook, stirring frequently, until thickened, 2 to 3 minutes longer. Transfer to serving dish, sprinkle with remaining peppercorns, and serve. (Mapo tofu can be refrigerated for up to 24 hours.)
32 Comments