Delightful Japanese Pork and Leek Gyoza

Name: Delightful Japanese Pork and Leek Gyoza
Ingredients: 2 tablespoons soy sauce; 1 tablespoon rice wine vinegar; 1 teaspoon sesame oil; 0.5 teaspoon chili-garlic sauce; 2 cups ground pork; 0.5 cup finely chopped leeks, white and light green parts only; 2 medium mushrooms, finely chopped; 2 cloves garlic, chopped; 1 tablespoon Japanese rice wine; 1 tablespoon soy sauce; 1 teaspoon grated fresh ginger; 0.25 teaspoon salt; 0.25 teaspoon ground black pepper; 2 (16 ounce) packages dumpling wrappers; 4 tablespoons vegetable oil for frying