Spicy Asian beef

700g roasting beef (cut into chunks and all visible fat removed)

1 tbsp cornstarch

1 tsp sesame oil

1 onion, roughly chopped

4 spring onions, chopped

3 cloves of garlic, crushed

1 red chilli, finely chopped

1 green pepper, roughly chopped

200g mushrooms, sliced

1 tbsp freshly grated ginger

4-5 tbsp dark soy sauce

4 tbsp light soy sauce

3 tbsp of rice vinegar

135ml water

1 tsp sugar

Black pepper to season

Some freshly chopped spring onion to decorate

Stir fried vegetables and jasmine rice, to serve