Shrimp Dumplings

Name: Shrimp Dumplings
Ingredients: 1 Teaspoon 1-inch piece pork fat or slab bacon (optional); 2.25 Teaspoon cornstarch; 0.75 Teaspoon oyster sauce; 0.5 Teaspoon sugar; 0.25 Teaspoon sesame oil; 0.25 Ounce ground white pepper; 0.5 Cup egg white, lightly beaten; 4 Ounce shrimp, peeled, deveined, tails removed, finely minced; 0.25 Cup minced water chesnut; 2 Tablespoon very thinly sliced scallion (white part only); 1 Tablespoon minced canned bamboo shoot; 0 kosher salt, to taste; 16 Count round gyoza dumpling wrappers; 0.5 Cup hoisin sauce; 2 Tablespoon chopped scallion