Dry Pot Chicken (Gan Guo Ji)

Preheat oven to 375 degrees F. Line a baking sheet with parchment paper.

Place tofu skin in a medium bowl and cover with boiling water. Let soak for 30 minutes. Drain.

Meanwhile, toss chicken with 2 tablespoons oil, 1 tablespoon Shaoxing and ground pepper in a large bowl. Transfer to the prepared baking sheet. Bake until an instant-read thermometer inserted in the thickest part without touching bone registers 165 degrees F, 25 to 30 minutes. Transfer to a clean cutting board. When cool enough to handle, pull the meat from the bones (discard bones and skin). Cut the chicken into bite-size pieces and set aside.

Heat a small skillet over medium heat for 1 minute. Add cumin seeds, fennel seeds and peppercorns; toast, stirring often, until fragrant, about 1 minute. Transfer to a plate to cool, then coarsely grind in a spice grinder or mortar and pestle. Transfer to a small bowl and add chili bean paste and chili flakes (or crushed red pepper); mix well and set aside.

Put a large pot of water on to boil and set a large bowl of ice water beside the stove. Add the tofu skin and potato to the boiling water. Cook until the potato is just tender, about 5 minutes. Add broccolini and celery; cook for 30 seconds. Using a slotted spoon, transfer the vegetables and tofu skin to the ice water, then transfer to a clean kitchen towel to drain.

Heat a large flat-bottom wok or cast-iron skillet over high heat. Add 4 tablespoons oil and onion. Cook, stirring, until the onion is softened, about 3 minutes. Add jalapeño (or serrano) and dried chiles to taste, garlic and ginger. Cook, stirring constantly, until fragrant, about 1 minute.

Push the aromatics to the sides of the pan, making a well in the center. Add the remaining 3 tablespoons oil, followed by the reserved peppercorn mixture. Cook, stirring, until fragrant, about 30 seconds. Add the chicken and scallions; cook, stirring, until the chicken is hot, about 1 minute. Drizzle the remaining 1 tablespoon Shaoxing and soy sauce around the edges of the pan, then add the vegetables and tofu skin. Cook, stirring, until the vegetables are hot, about 1 minute more. Sprinkle with sesame seeds.