01 - Preheat oven to 425°F (220°C). Line a baking sheet with parchment paper or foil and set a wire rack on top if available.
02 - Pat chicken wings dry with paper towels. Arrange wings on the prepared rack or directly on the baking sheet. Bake for 35 to 40 minutes, flipping halfway through, until skin is crisp and golden.
03 - While chicken is baking, combine soy sauce, honey, brown sugar, rice vinegar, sesame oil, garlic, and ginger in a small saucepan. Bring to a gentle simmer over medium heat, stirring until sugar has dissolved.
04 - In a small bowl, whisk cornstarch with water. Stir this mixture into the saucepan and cook for 2 to 3 minutes more, until the sauce thickens and becomes glossy. Remove from heat.
05 - Transfer baked wings to a large bowl. Pour prepared teriyaki sauce over wings and toss to coat evenly.
06 - Return coated wings to the baking sheet. Bake an additional 5 minutes until the sauce caramelizes.
07 - Serve hot, garnished with sliced spring onions and toasted sesame seeds.