Hoisin Beef Noodles

Serves 4:

To marinade the beef:
500g lean steak strips
1 tbsp light soy sauce
1 level tbsp cornflour
1/4 tsp bicarbonate of soda
Black pepper

For the stir fry:
Spray veg oil
2 peppers, sliced
1 red onion, sliced
1 punnet mushrooms, sliced
Small bunch spring onions, sliced
Dried egg or wholewheat noodles