Mushi-Gyoza (Steamed Gyoza)

INGREDIENTS

• 1 tablespoon soy sauce
• 2 cloves garlic, crushed
• 2 Thai chili peppers, chopped with seeds
• 1 cup dried shitake mushrooms, rehydrated and chopped fine
• 1 tablespoon ginger, grated
• 1 pound ground pork
• 50 round gyoza wrappers
• 1/3 cup vinegar
• 1 tablespoon green onion, chopped fine
• 1 tablespoon sesame oil
• 3 tablespoons canola oil
• 3/4 cups soy sauce
• 1 teaspoon sugar
• 2 teaspoons corn starch
• 1 tablespoon mirin
• 1 teaspoon salt