01 - Preheat oven to 425°F. Line a baking sheet with parchment paper or aluminum foil and place a wire rack on top if available.
02 - Pat the chicken wings thoroughly dry with paper towels. Arrange wings on the prepared wire rack or directly on the baking sheet. Bake for 35 to 40 minutes, flipping halfway through, until the skin is crisp and golden brown.
03 - While the wings bake, combine soy sauce, honey, brown sugar, rice vinegar, sesame oil, minced garlic, and grated ginger in a small saucepan. Bring to a simmer over medium heat, stirring constantly until the sugar fully dissolves.
04 - Whisk cornstarch together with water in a small bowl to create a slurry, then stir it into the saucepan. Continue cooking for 2 to 3 minutes until the sauce thickens and develops a glossy sheen. Remove from heat and set aside.
05 - Transfer the baked wings to a large mixing bowl. Pour the thickened teriyaki sauce over the wings and toss vigorously until every piece is evenly coated.
06 - Return the coated wings to the baking sheet and bake for an additional 5 minutes to allow the sauce to caramelize and adhere to the skin.
07 - Transfer wings to a serving platter and garnish with thinly sliced spring onions and toasted sesame seeds. Serve immediately while hot.