01 -
Heat half of the Sichuan peppercorns in a large wok over high heat until lightly smoking. Transfer to a mortar and pestle. Pound until finely ground and set aside.
02 -
Add remaining Sichuan peppercorns and vegetable oil to wok. Heat over medium-high heat until lightly sizzling, about 1 1/2 minutes. Remove peppercorns with a wire mesh skimmer and discard, leaving infused oil in the pan.
03 -
Combine cornstarch and cold water in a small bowl and mix with a fork until homogenous.
04 -
Bring a medium saucepan of water to a boil over high heat and add tofu. Cook for 1 minute. Drain in a colander, being careful not to break up the tofu.
05 -
Heat the infused oil in wok over high heat until smoking. Add beef and cook, stirring constantly for 1 minute. Add garlic and ginger and cook until fragrant, about 15 seconds.
06 -
Add chili bean paste, wine, soy sauce, and chicken stock and bring to a boil. Pour in cornstarch mixture and cook for 30 seconds until thickened.
07 -
Add tofu and carefully fold in, being gentle to maintain its shape. Stir in chili oil and half of scallions and simmer for 30 seconds longer.
08 -
Transfer immediately to a serving bowl and sprinkle with remaining scallions and toasted ground Sichuan pepper. Serve immediately with white rice.