Open-topped siu mai dumplings packed with pork and shrimp deliver rich protein in every bite. A family-friendly dim sum staple with fresh, savory flavor.
Finely chop the shrimp, shiitake mushrooms, water chestnuts, and scallions. Combine with ground pork in a large bowl.
Add soy sauce, sesame oil, sugar, cornstarch, and white pepper to the pork mixture. Mix vigorously by hand until the filling is sticky and cohesive—about 2 minutes for best texture.
Place a wonton wrapper in your palm, add about 1 tablespoon of filling to the center, and form into an open-topped dumpling by gently squeezing up the sides.
Prepare a steamer and line with parchment or cabbage leaves. Arrange siu mai so they do not touch. Steam over high heat for 7–8 minutes, checking that filling firms up and wrappers become translucent.
Rest the cooked siu mai for 2–3 minutes before serving to stabilize juices and avoid burning. Garnish with extra scallions if desired.