Huli Huli Chicken (Tropical Hawaiian chicken)

Ingredients

For 5 servings

• 1.5 kg / 3 lb skinless boneless chicken thighs or breast (- but see Note 1)
• 1 tbsp vegetable oil
• 3/4 cup pineapple juice, canned or bottled (NOT FRESH!) (, unsweetened (Note 2))
• 1 1/2 tbsp ginger (, freshly grated (Note 3))
• 1 1/2 tbsp garlic (, freshly grated (Note 3))
• 1/2 cup tomato ketchup ((or Aussie tomato sauce))
• 1/2 cup soy sauce
• 1/4 cup sherry or Chinese cooking wine ((Note 4))
• 1/4 cup brown sugar
• 1 tbsp Sriracha
• 2 tbsp rice vinegar ((or cider vinegar))
• 1 tbsp sesame oil (, toasted)
• Sliced green onion
• Pineapple slices (, grilled for 3 minutes on each side for lines)