Named after the Song Dynasty poet Su Dongpo, this legendary dish features pork belly braised for hours in Shaoxing wine and soy sauce until it trembles at the touch. A celebration-worthy family dish, it represents the pinnacle of Chinese slow cooking.
Blanch the pork belly slab in boiling water for 5 minutes to remove impurities, then drain and pat dry.
Cut pork into 2.5-inch squares. Layer the bottom of a large Dutch oven or clay pot with half the green onions and ginger slices.
Nestle pork pieces skin-side down over the aromatics. Pour in Shaoxing wine, soy sauce, dark soy sauce, and water. Sprinkle in rock sugar evenly.
Add remaining green onions and ginger on top. Bring the mixture to a gentle simmer over medium heat, then turn heat to very low, cover, and braise for 3 hours.
After 3 hours, carefully flip pork skin-side up. Simmer uncovered on low heat another 30–45 minutes, spooning sauce over the skin, until glossy and the pork jiggles to the touch.
Carefully transfer pork pieces with a slotted spoon to a serving dish and strain sauce over the top. Serve hot with steamed rice or buns.