01 - Set oven to 425°F. Line a baking sheet with parchment paper or foil. Place a wire rack on top if available.
02 - Pat chicken wings thoroughly dry with paper towels. Arrange evenly on prepared rack or directly on baking sheet. Bake for 35 to 40 minutes, flipping halfway through, until skin is crisp and golden.
03 - While 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 until sugar dissolves completely.
04 - Whisk cornstarch with water in a small bowl, then stir into saucepan. Cook for 2 to 3 minutes, stirring, until sauce becomes thick and glossy. Remove from heat.
05 - Transfer baked wings to a large mixing bowl. Pour teriyaki sauce over wings and toss until evenly coated.
06 - Return coated wings to the baking sheet and bake for an additional 5 minutes, allowing the sauce to caramelize on the surface.
07 - Garnish hot wings with sliced spring onions and toasted sesame seeds. Serve immediately.