Beef and Broccoli

We're not big beef eaters, but maybe once or twice a year I'll get a craving for a beef dish.  I ran across this recipe and, having some broccoli on hand, thought I'd try this.  It's just what I was looking for.  An extra plus was that I was able to get everything ready during my lunch hour (marinated the beef, made the sauce, readied the garlic and ginger), and simply put it together in a matter of minutes at dinner time.  Serve with jasmine rice for a simple one-dish dinner.

BEEF AND BROCCOLI (serves 4-5)

Sauce:
1 Tbsp rice wine vinegar
2 Tbsp chicken broth
5 Tbsp oyster sauce
2 Tbsp light brown sugar
1 tsp sesame oil
2 tsp cornstarch

Beef and Broccoli:
3 Tbsp soy sauce
1 1/2 pounds flank steak, cut into 2" strips with the grain, then sliced across the grain into 1/8" slices
6 medium cloves garlic, minced (about 2 Tbsp)
1" fresh ginger, minced (about 1 Tbsp)
1 tsp vegetable oil, plus extra for cooking
1 1/4 pounds bite-sized broccoli florets
1/3 cup water
3 medium scallions, sliced 1/2" thick on diagonal, optional

In a medium bowl, combine beef and soy sauce. Cover with plastic wrap and refrigerate at least 10 minutes or up to 1 hour.  Meanwhile, whisk the sauce ingredients together in a liquid measure or small bowl.  In another small bowl, combine garlic, ginger, and 1 tsp oil.  Set aside.

Heat 1-2 tsp oil in a 12" skillet over medium-high heat until hot and rippling.  Add half of the beef to the skillet and break up clumps, cook, without stirring, for 1 minute, then stir and cook until beef is browned around edges and cooked through, about 1-2 minutes.  Don't overcook the meat, cook until just barely cooked through so the meat stays tender.  Transfer beef to a medium bowl and cover with aluminum foil.  Heat another 1-2 tsp oil in the skillet and repeat with remaining beef.

Add 1 Tbsp oil to now-empty skillet; heat until rippling and hot.  Add broccoli and cook 30 seconds; add water, cover pan, and lower heat to medium.  Stream broccoli until crisp-tender, now more than 2 minutes.  Push the broccoli to the sides of the skillet and add the garlic/ginger mixture.  Cook, mashing the mixture with a spoon, until fragrant, about 15-30 seconds.  Stir the mixture into the broccoli.  Add the beef back to the skillet and toss to combine.  Whisk the sauce to recombine and add to the skillet.  Cook, stirring constantly, until sauce is thickened and evenly distributed, about 1-2 minutes.  

Transfer to a serving platter, sprinkle with scallions, and serve over rice.