Creating a delicious bowl of Gyoza Soup is straightforward if you follow these steps:

1. Prepare Filling: In a mixing bowl, combine ground pork, green onions, cabbage, garlic, ginger, soy sauce, sesame oil, salt, and pepper. Mix until well combined.
2. Fill Gyoza: Lay a gyoza wrapper flat in the palm of your hand. Place about 1 teaspoon of filling in the center. Moisten the edges with water, fold in half, and press to seal. Pleat the edges for a traditional look. Repeat until all filling is used.
3. Cook Gyoza: In a pan over medium heat, add a splash of oil. Carefully add gyoza and cook until the bottoms are golden brown, about 2-3 minutes. Add a splash of water, cover, and steam for 5 minutes. Remove and set aside.
4. Prepare Broth: In a large pot, bring the chicken or vegetable broth to a boil. Add sliced mushrooms and bok choy or spinach. Let simmer for 5-10 minutes until vegetables are tender.
5. Add Seasoning: Stir in soy sauce and mirin (if using) into the broth for added flavor. Adjust seasoning to taste.
6. Combine: Gently add gyoza to the pot and simmer for 5 more minutes to allow flavors to meld.
7. Garnish: Serve hot, garnished with fresh herbs, such as cilantro or additional green onions.

These steps will guide you in crafting this incredible Gyoza Soup with ease!