In a large mixing bowl, add everything from the ground pork to the white pepper. Stir in one direction for about 3 minutes until the mixture has no more lumps. It will feel very wet at first, but as you mix, it becomes springy and thicker.
Fill the cups
Place 1 wonton wrapper at the bottom of each cup.
Scoop about 3 tablespoons of the pork mixture into each cup and use the back of a spoon to level it. Don’t press it down, and don’t overfill.
Aim for about 2–3 small bites per cup. Too much meat will make the bao feel heavy and throw off the meat-to-wrapper balance.
To “seal” the bao, dip 1 wonton wrapper in water to moisten it and place it on top of the filling. Gently press so it adheres. Repeat with all cups.
Steam the xiao long bao
In a 12-inch deep sauté pan with a flat bottom, add ½ cup water and place the cups inside. Cover and bring to a boil over medium heat, about 4–5 minutes. Drop the heat to low and steam for 12 minutes.
Check doneness
Use a teaspoon to press gently into the meat. The juices should run clear. You can also break the center open to check for pink. If it’s not fully cooked, steam for 2 more minutes.
How to serve
Carefully lift the cups out. Top each with scallions and a few ginger strips. Add a small splash of soy sauce and vinegar.
Serve immediately while the wrappers are soft and the filling is warm. If served cold or at room temperature, the wrappers turn dry and lose their silky texture.
Notes
Why add so much liquid to the filling? The chicken broth keeps the meat tender and juicy, so the dumplings don’t taste dense.
Make-ahead: The pork mixture can be prepared 1 day ahead. Let it sit at room temperature to remove the chill before steaming.
Steaming time: The exact time depends on the size and thickness of your ceramic cups.
Use low heat: Keep the heat low while steaming. Medium or high heat can cause the water to bubble up and spill over.
Batching tip: When filming, I steamed 12 cups by splitting them into two batches of 6 cups per pot.
Smaller portions: You can cut the recipe in half or freeze extra filling. Defrost overnight before using.
If using thicker ramekins: Add 2 extra minutes to the steaming time.