Beef with Broccoli in Oyster Sauce

Again another recipe from my momma's old book!

Ingredients:
2/3 lb beef tenderloin (marinate in 1TBS. cornstarch, 1 TBS soy sauce, 1/2 TBS DOM, 1/2 TBS water - for 1 hour)
2 TBS oil
200g broccoli
1/2 white onion (sliced)
6 slices of ginger

Mix:
3 TBS water
1 1/2 TBS oyster sauce
1 TBS soy sauce
1/2 TBS Taucheou
1 teaspoon cornstarch
1/2 teaspoon sugar
dash of pepper and sesame oil

1. heat wok and add oil
2. stir fry onion and ginger till fragrant
3. add in meat and stir fry till colour changes
4. add in broccoli
5. add in sauce mixture and simmer for a few minutes
6. serve hot!