Pork and Ginger Pot Stickers

Name: Pork and Ginger Pot Stickers
Ingredients: 2 cups chopped napa cabbage; 1/2 tablespoon salt; 1/2 pound ground pork (Don't get lean pork, the fat is good for juicy and flavorful dumplings); 2 tablespoons minced ginger; 1 1/2 tablespoons minced garlic; 2 tablespoons thin soy sauce; 3 tablespoons sesame oil; 1 egg; 1 to 2 cups chicken stock or water; 4 cups all-purpose flour; 1/2 teaspoon salt; 1 1/2 to 1 3/4 cups boiling water; 1/3 cup thin soy sauce; 1/3 cup rice wine vinegar; 1/3 cup sliced scallions; 1 teaspoon sesame oil; 1 tablespoon sambal