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 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 continuously until the sugar fully dissolves.
04 - Whisk cornstarch with water in a small bowl until smooth, then stir the slurry into the saucepan. Continue cooking for 2 to 3 minutes until the sauce thickens and develops a glossy finish. Remove from heat.
05 - Transfer the baked wings to a large mixing bowl. Pour the thickened teriyaki sauce over the wings and toss thoroughly to ensure even coating on all surfaces.
06 - Return the coated wings to the baking sheet and bake for an additional 5 minutes, allowing the sauce to caramelize and form a sticky glaze.
07 - Serve immediately while hot, garnished with thinly sliced spring onions and toasted sesame seeds.