For the sweet and sour sauce:

• 1/2 cup hot water
• 1/4 teaspoon salt
• 2 tablespoons sugar
• 1 tablespoon ketchup
• 1/2 cup pineapple juice (optional)
• 3 tablespoons rice wine vinegar

For the chicken:

• 12 ounces boneless skinless chicken breast or thighs
• 1–2 tablespoons water
• 1/8 teaspoon garlic powder
• 1/4 teaspoon onion powder
• 1/2 teaspoon sesame oil
• 1/8 teaspoon white pepper
• 1/2 teaspoon salt

For the batter:

• 3/4 cup all purpose flour
• 1 tablespoon cornstarch
• 1/2 teaspoon baking powder
• 1/4 teaspoon baking soda
• 2/3 cup ice water
• 1 tablespoon vegetable oil

For the rest of the dish:

• 2/3 cup canned pineapple chunks
• 1 tablespoon oil
• 1/4 cup red onion
• 1/4 cup red bell pepper
• 1/4 cup green bell pepper
• 2 tablespoons cornstarch
• 2 tablespoons water