Recipe: Pork and Shrimp Shumai

Name: Recipe: Pork and Shrimp Shumai
Ingredients: 1 pound ground pork; 2 ounces peeled and deveined shrimp, minced; ¼ cup dried shiitake mushrooms, rehydrated and minced; 2 tablespoons soy sauce; 1 tablespoon oyster sauce; 1 tablespoon Shaoxing cooking wine; ½ tablespoon sesame oil; ½ tablespoon kosher salt; ¾ teaspoon sugar; ½ teaspoon freshly ground white pepper; 2 small scallions, trimmed and minced; One 1-inch piece ginger, peeled and minced; 18 round dumpling wrappers; Soy sauce, for serving; Chinese hot mustard, for serving