Make the Dumpling Filling: Add 1 lb ground pork, freshly grated ginger, soy sauce, Shaoxing wine, white pepper, salt, sugar, and toasted sesame oil to a large bowl.
Add half of the chicken stock, stir until fully absorbed. then add the remaining stock. Stir everything together in one direction until the pork starts to become sticky and almost paste-like. Add the chopped green onions last and gently mix just until combined.
Add 1½ tablespoons cooking oil to a non-stick pan and spread it evenly over the bottom.
Layer the Dumpling Lasagna: Dip each dumpling wrapper briefly in water, then arrange a layer in the pan, slightly overlapping them as needed. Add half of the pork filling and spread it into a thin, even layer over the wrappers.
Cover with another layer of dumpling wrappers, then add the remaining pork filling and spread it evenly. Finish with one final layer of dumpling wrappers on top.
Pour ⅓ cup chicken stock around the edges of the pan and a little over the top.
Cover and Cook: Cover the pan and cook over medium-low heat for about 15–20 minutes, until the pork is completely cooked through.
If the liquid evaporates too quickly, add a splash of water, cover again, and continue cooking. The ground pork should reach an internal temperature of 160°F (71°C).
Crisp the Bottom: Once the pork is cooked through and most of the liquid has evaporated, remove the lid. Continue cooking uncovered for another 2–3 minutes, or until the bottom becomes golden and crispy just like pan-fried dumplings.
If there’s still quite a bit of liquid left in the pan, you can increase the heat slightly to help it evaporate. Just keep an eye on the bottom so it doesn’t burn. And if you prefer a soft dumpling bottom, you can skip this step completely!
Remove the pan from the heat and let the dumpling lasagna rest for about 5 minutes. Cut it into wedges using a wooden or silicone spatula and transfer to plates. Top with chopped green onions and toasted sesame seeds if you like. Serve hot!
Make the Dipping Sauce: Into a small bowl, add sugar, soy sauce, rice vinegar, chili oil, water, minced garlic if using, and sesame oil. Mix everything together and drizzle it over the dumpling lasagna wedges as needed, or serve it on the side.