Authentic Sichuan mapo tofu with numbing peppercorns and spicy bean paste is a vegetarian-friendly classic. A protein-rich, healthy dish perfect for family dinners.
Cut the firm tofu into 1-inch cubes and blanch them in simmering water for 2 minutes to firm up the texture. Drain and set aside.
Toast the Sichuan peppercorns in a dry pan over medium-low heat for 1-2 minutes until fragrant, then grind coarsely with a mortar and pestle.
Heat vegetable oil in a large skillet over medium-high. Add minced garlic, ginger, and diced shiitake mushrooms; sauté for 2-3 minutes until softened.
Stir in the doubanjiang and half of the ground Sichuan peppercorns, cooking for 1 minute to bloom the aroma. Add soy sauce and mix well.
Pour in water and bring to a simmer. Gently add tofu cubes, cover, and simmer on medium-low for 6-8 minutes, allowing flavors to infuse.
Combine cornstarch with 2 tablespoons of water to form a slurry. Stir gently into the simmering tofu, and cook for 1-2 minutes until the sauce thickens.
Top with chopped scallions and the remaining Sichuan peppercorns just before serving for a bright finish.