2. Mix corn flour, sherry, soy sauce and baking soda in a bowl, add beef slices and marinate in the refrigerator for 30 minutes.

3. Heat the frying pan over medium heat and pour in 3 teaspoons of olive oil. Take out the beef slices (keep the marinade) and put them in the pot, add half of orange peel and red pepper powder.

Cook for 3 minutes, or until the beef slices are soft and cooked. Set aside.

4. Pour the remaining 1 teaspoon olive oil into the pot, add broccoli, red bell pepper, shallots and garlic, and fry for 3 minutes until the broccoli begins to soften. increase

120 ml water, and cook for 2 to 3 minutes until the broccoli is just cooked.

5. Add 80 ml of water to the marinade, pour it into the pot, boil it and cook it for 1 min, and keep stirring until the marinade thickens. Put the beef slices back in the pot and add the beans.

Stir-fry potatoes 1 min, and serve the beef slices as soon as they are heated through. Sprinkle the remaining orange peel.