Thinly slice flank steak. I cut into cubes this time.

To start cooking take beef out of refrigerator half hour before beginning. To fry up meat it's best to have it at room temperature.

In a large skillet and oil and heat it over medium high heat. Drain beef from marinade but reserve it. Add beef to heated oil and saute for 5 minutes.

Lower heat to medium. Mix all other ingredients in with left over marinade. Stir and add to beef once you see beef is cooked through.

Heat until bubbly and sauce starts to thicken. Add the broccoli and water chestnuts. Cook for another 2 minutes and serve.

Optional is adding in some red pepper flakes while sauce cooks. We like spicy foods so I add them. It is up to your taste preferences. I serve over hit basmati rice.