• 8 oz. (230g) boneless and skinless chicken breast, cut into bite-size cubes
• 1 tablespoon Shaoxing wine optional
• 2 cloves garlic finely chopped
• 1 green bell pepper seeded and cut into squares
• 1 small tomato cut into wedges, optional
• 1 stalk scallion cut into 2-inch (5cm) lengths
• oil for deep frying

Batter:

• 4 tablespoons all-purpose flour
• 4 tablespoons corn starch
• 1/2 cup water
• 1/2 teaspoon baking powder

Sweet and Sour Sauce:

• 3 tablespoons ketchup
• 2 tablespoons Lingham brand hot sauce or other chili sauce
• 1 teaspoon plum sauce
• 1/2 teaspoon Lea and Perrins Worcestershire sauce
• 1/4 teaspoon Chinese rice vinegar
• 1/2 teaspoon oyster sauce
• 1 tablespoon sugar
• 3 tablespoons water
• 1/2 teaspoon corn starch
• 3 dashes white pepper powder