01 - In a large bowl, whisk together the white miso paste, honey, soy sauce, rice vinegar, sesame oil, minced garlic, grated ginger, chili flakes, and water until completely smooth and well combined.
02 - Add the chicken wings to the marinade and toss thoroughly to ensure even coating. Cover the bowl and refrigerate for at least 30 minutes, though 2 hours will yield deeper flavor penetration.
03 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly oil a wire rack set over the sheet for optimal air circulation.
04 - Place the marinated wings in a single layer on the prepared baking sheet or wire rack, making sure not to overcrowd. Reserve the excess marinade for basting.
05 - Bake the wings for 25 minutes until the exterior begins to set and lightly color.
06 - Remove the wings from the oven, brush generously with the reserved marinade, and flip each wing to ensure even caramelization on both sides.
07 - Return to the oven and continue baking for 10 more minutes until the wings are golden brown, caramelized, and cooked through to an internal temperature of 165°F.
08 - For extra crispiness, switch the oven to broil on high for 2 to 3 minutes, watching carefully to prevent burning. The sugars in the marinade can char quickly.
09 - Transfer the wings to a serving platter and immediately sprinkle with toasted sesame seeds and thinly sliced green onions. Serve hot.