Mushroom Pork and Shrimp Dumplings

Name: Mushroom, Pork and Shrimp Dumplings
Ingredients: 3/4 ounces dried shiitake mushroom caps; 1/2 pound fatty ground pork, preferably pork butt; 1/2 pound shelled and deveined large shrimp, finely chopped; 2 scallions, thinly sliced; 1/3 cup finely chopped canned water chestnuts (about 5); 2 tablespoons minced peeled fresh ginger; 1 1/2 tablespoons soy sauce; 1 1/2 tablespoons Shaoxing wine; 1/2 tablespoon toasted sesame oil; 1/2 tablespoon sugar; 1 1/2 teaspoons kosher salt; 1 large egg white; 1 tablespoon cornstarch; 36 Basic Dumpling Wrappers; Canola oil, for frying