30min · 4 servings SWEET AND SOUR SAUCE • 2 tbsp (15g) cornstarch • 2 tbsp (30g) packed light brown sugar • 3 tbsp ketchup • 1 tbsp light soy sauce • 1 tbsp oyster sauce • 2 tbsp rice vinegar • 2 tbsp Chinese cooking wine (optional) • 250 ml (1 cup) pineapple juice or water • garlic clove, finely diced • 1 tsp fresh ginger, finely diced CHICKEN • 450 g (1 pound) chicken breast, skinless and boneless • 1 egg • 3 tbsp (35g) cornstarch • 1/4 tsp baking powder • 240 ml (1 cup) canola oil, for frying • 2 tbsp peanut or canola oil, for veggies • 2 tbsp unsalted peanuts • 1/2 yellow pepper, 1/2 red pepper, 1/2 green pepper, cut into smaller chunks • 1 onion, cut into strips • 100 g (1/2 cup) canned or fresh pineapple, cubed • 1 spring onion