01 - Preheat oven to 425°F. Line a baking sheet with parchment paper or foil and place a wire rack on top if available.
02 - Pat the chicken wings dry using paper towels. Arrange wings in a single layer on the prepared rack or directly on the baking sheet. Bake for 35 to 40 minutes, turning halfway through, until the 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. Simmer over medium heat, stirring constantly until the sugar fully dissolves.
04 - Whisk together cornstarch and water in a separate bowl. Add this mixture to the saucepan, stirring well. Simmer for 2 to 3 minutes until the sauce thickens and becomes glossy. Remove from heat.
05 - Transfer baked wings to a large bowl. Pour the thickened teriyaki sauce over and toss until wings are coated evenly.
06 - Place coated wings back on the baking sheet and return to the oven. Bake for an additional 5 minutes to caramelize the sauce.
07 - Garnish hot wings with sliced spring onions and toasted sesame seeds before serving.