Beef:

• 1 lb flank steak, cut into 1/4-inch strips
• 1/4 tsp baking soda
• 1 tsp white pepper
• 1 tbsp light soy sauce
• 2 tbsp cornstarch
• 1 egg white, beaten
• 1/4 cup cornstarch (for dusting beef)
• 1/4 cup peanut oil (for frying)

Vegetables:

• 1 red bell pepper, cut into 2-inch pieces
• 1 white onion, cut into 2-inch pieces
• 2 cloves garlic, minced

Sauce:

• 1/2 cup water
• 2 tbsp light soy sauce
• 1/4 tbsp oyster sauce
• 1/4 cup hoisin sauce
• 1/4 cup sugar
• 2 tsp chili paste
• 1 tsp red chili flakes
• 3 tbsp ketchup
• 2 tbsp apple cider vinegar

Slurry:

• 1 tbsp cornstarch
• 1 tbsp water