1 1/2 lbs beef sirloin (or tenderloin), cubed
3 tablespoons garlic, minced
1 teaspoon salt
1/8 cup butter
3 tablespoons olive oil
1/2 teaspoon ground black pepper
5 tablespoons Worcestershire Sauce
2 tablespoons oyster sauce
Combine the beef, salt, pepper, and garlic then mix well. Let stand for 10 minutes.
Add the olive oil and marinade for at least 30 minutes.
Heat pan and add marinated beef.
Sear the beef until the color of the outer part turns brown.
Toss the beef while searing so that all sides are uniformly cooked.
Add the oyster sauce and Worcestershire sauce and continue tossing until the liquid dries up.
Add butter and cook for 2 to 3 minutes more.