01 -
In a medium bowl, whisk together soy sauce, brown sugar, ketchup, pineapple juice, rice vinegar, garlic, ginger, and sesame oil until well combined.
02 -
Place chicken thighs in a resealable plastic bag or shallow dish. Pour the marinade over the chicken, ensuring all pieces are coated. Seal or cover and refrigerate for at least 2 hours, preferably overnight for optimal flavor.
03 -
Set grill to medium heat to prepare for cooking.
04 -
Remove chicken from the marinade and reserve the excess liquid. Grill chicken thighs for 6–7 minutes per side, basting occasionally with the reserved marinade. Continue grilling until the internal temperature reaches 75°C.
05 -
While the chicken is grilling, pour the reserved marinade into a small saucepan and bring it to a boil. In a separate bowl, whisk together cornstarch and water to form a slurry, then stir into the boiling marinade. Simmer until the glaze thickens and becomes glossy.
06 -
During the final minutes of grilling, brush the thickened glaze over the chicken. Remove from heat, garnish with chopped green onions and fresh pineapple slices before serving.