Step 1: Prepare the Marinade : In a bowl, whisk together soy sauce, honey, rice vinegar, mirin, sesame oil, garlic, and ginger. Reserve ¼ cup of this marinade in a small pot for later glazing.

Step 2: Marinate the Chicken : Add chicken pieces to the remaining marinade. Toss well to coat completely. Cover and refrigerate for 30 minutes (up to 4 hours).

Step 3: Prepare the Skewers : If using wooden skewers, soak them in water for 20 minutes to prevent burning. Thread marinated chicken pieces onto the skewers tightly but without overcrowding.

Step 4: Cook the Chicken : Grill Method: Preheat grill to medium-high heat. Grill skewers for 10–12 minutes, turning frequently. Stovetop Method: Heat a grill pan with a little oil. Cook skewers for 12–14 minutes, turning to brown all sides. Oven Broil Method: Place skewers on a foil-lined tray. Broil on high for 10–12 minutes, flipping halfway.

Step 5: Thicken the Glaze :Heat the reserved marinade over medium heat. Add cornstarch slurry and stir until thickened.

Step 6: Final Glazing : Brush the cooked chicken skewers generously with the thickened teriyaki sauce. Garnish with sesame seeds and scallions.