In a bowl, combine the ground chicken, scallions, garlic, ginger, soy sauce, rice vinegar, and sesame oil. Mix well until fully combined.

Take small ramekins. Place a wonton wrapper on the bottom. Add a thin layer of chicken filling. Continue layering wonton wrapper → chicken filling until the ramekin is full, ending with a wonton wrapper on top. Continue with the remaining ramekins.

Add a small splash of water (about one to two tablespoons ) to each ramekin. In a wide pot, bring some water to a low boil. Place the ramekins inside, cover the pot, and steam for 12–15 minutes, until the chicken is fully cooked.

While steaming, whisk together all sauce ingredients in a small bowl. Adjust sweetness or heat to taste.

Carefully remove ramekins from the pot. Drizzle generously with sauce, sprinkle with extra scallions if using, and enjoy warm.