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 chicken wings dry with paper towels and 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 until the sugar fully dissolves.
04 - Whisk cornstarch with water in a small bowl to form a slurry, then stir it 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.
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 - Serve hot, garnished with thinly sliced spring onions and toasted sesame seeds.