01 -
In a large bowl, whisk together pineapple juice, soy sauce, brown sugar, ketchup, minced garlic, grated ginger, vinegar, sesame oil, Worcestershire sauce, grated onion, black pepper, and sriracha until the sugar is fully dissolved.
02 -
Before adding chicken, pour 1/2 cup of the marinade into a separate container and refrigerate for later use as glaze. Ensure this reserved marinade does not contact raw chicken.
03 -
Place chicken thighs in a large zip-top bag or dish. Pour remaining marinade over the chicken and turn to coat evenly. Marinate in the refrigerator for at least 4 hours or overnight for optimal flavor.
04 -
Remove chicken from refrigerator and allow it to sit at room temperature for 20 minutes prior to grilling.
05 -
Preheat grill to medium heat and brush grates generously with oil to prevent sticking.
06 -
Remove chicken from marinade and discard used marinade. Grill chicken over medium heat for 25 to 30 minutes, turning every 8 to 10 minutes to achieve even caramelization.
07 -
While chicken grills, bring reserved marinade to a boil in a small saucepan. Whisk cornstarch and cold water together, then stir into boiling marinade. Cook 1 to 2 minutes, stirring until thickened and glossy.
08 -
During the last 5 minutes of grilling, brush thickened glaze generously over chicken, allowing it to caramelize and develop a sticky finish. A slight char is desirable.
09 -
Remove chicken once it reaches an internal temperature of 165°F. Let rest for 5 minutes before serving.
10 -
If using oven, preheat to 400°F. Arrange marinated chicken on a wire rack over a foil-lined baking sheet. Bake 30 to 35 minutes, brushing with glaze during the last 5 minutes. Broil for 2 to 3 minutes at end for deeper color if desired.
11 -
Sprinkle with sliced green onions and sesame seeds before serving.