Brown the onions and steak strips in a saucepan. Once the steak strips have a nice crust (but are still rare inside), remove the meat and onion from the pan and set aside.
3
In the same saucepan, brown the butter. Then add flour, stir well and simmer until golden brown.
4
Stir in the beef broth little by little. Next, stir in black pepper, soy sauce and oyster sauce.
5
To the soup, add the cooked meat, carrots and potatoes. Let the soup cook with the lid on for about 30 minutes.
