Place the chicken pieces in a bowl and add the soy sauce, ground ginger, and garlic powder. Stir until evenly coated, then cover and refrigerate for 30 minutes to marinate.
1.5 pounds chicken breast, 1 tablespoon ground ginger, 1 tablespoon soy sauce, 1 tablespoon garlic powder
In a separate shallow bowl, combine the flour, cornstarch, salt, and pepper, whisking until well mixed.
1 cup cornstarch, 1 cup all-purpose flour, 1 teaspoon salt, 1 teaspoon pepper
Add the egg whites to the marinated chicken and stir to coat each piece evenly.
2 large egg whites
Take a few pieces of chicken at a time and dredge them in the flour mixture, ensuring they are fully coated. Set aside and repeat until all chicken pieces are coated.
Heat the vegetable oil in a large frying pan over medium-high heat. To test if the oil is hot enough, drop in a small bit of batter—if it sizzles, it's ready.
2 cups vegetable oil
Fry the chicken in batches to prevent overcrowding, cooking for about 4 minutes until golden brown and crispy. Ensure the chicken reaches an internal temperature of 165°F (70°C). Transfer to a plate lined with paper towels to absorb excess oil.
In a saucepan over medium heat, combine the rice vinegar, soy sauce, hoisin sauce, minced garlic, chicken broth, sugar, and red pepper flakes. Stir and bring the mixture to a boil.
2 tablespoons soy sauce, 1 tablespoon rice vinegar, 2 tablespoons hoisin sauce, 1 tablespoon minced garlic, ½ cup chicken stock, 2 tablespoons granulated sugar, 2 tablespoons red pepper flakes
In a small bowl, whisk the cold water and cornstarch together to create a slurry. Pour the slurry into the sauce, whisking continuously until the mixture thickens, about 3 to 4 minutes.
1 tablespoon cornstarch, 2 tablespoons cold water
Add the fried chicken to the sauce and toss until fully coated. Garnish with green onions if desired and serve with rice.
Green onion