Stir Fry Beef Slices in Ginger & Scallion

I have bookmarked this recipe for quite awhile and only till today I have cooked it as I seldom cooked beef though I love to eat beef.  When you stir fry beef slices, it is advisable to get the rump part or the tenderloin slice. 

Ingredients
300g rump steak, thinly sliced
2 stalks scallion/spring onion, cut into 5cm length
50g ginger, thinly sliced
1 tbsp soy sauce
1/2 tbsp cornflour
1/2 tbsp oil
Salt & white pepper
Splash of sesame oil

Method
1. Marinate beef slices with soy sauce, cornflour and oil for 15-30 minutes.
2.  Heat 1 tbsp of oil in a wok under high heat until smoking hot.
3.  Add sliced ginger and give it a quick stir for a minute.
4.  Add beef and scallions and quickly stir fry for a further 1-2 minutes until the beef turned brown and just
     cooked and scallions are slightly wilted.
5.  Season with salt and white pepper and add a splash of sesame oil. Mix well and serve immediately with
     steamed rice.

The scallion/spring onions supposed to be cut into 5cm length but my "kitchen helper" voluntarily helped out without consulting me has cut into small pieces!  :-(

The splash of sesame oil at the end completed cooking, brings out the aroma and taste to the beef.  In have dash in black pepper instead of white pepper.