Chicken:

• 4 cups vegetable oil for frying
• 1 large egg
• 1 ½ pounds skinless, boneless chicken thighs, cut into 1 ½-inch pieces
• 1 teaspoon salt
• 1 teaspoon white sugar
• 1 pinch white pepper
• 1 cup cornstarch

Sauce:

• 2 tablespoons vegetable oil
• 3 tablespoons chopped green onion
• 1 clove garlic, minced
• 6 dried whole red chilies
• 1 strip orange zest
• ½ cup white sugar
• ¼ cup soy sauce
• 3 tablespoons chicken broth
• 2 tablespoons peanut oil
• 1 tablespoon rice vinegar
• 2 teaspoons sesame oil
• ¼ teaspoon ground ginger
• 2 teaspoons cornstarch
• ¼ cup water