Step 1

In a medium mixing bowl, combine the beef, the pepper, 1 tablespoon of the soy sauce, the cooking wine, 1/2 tablespoon of the cornstarch, and 1 tablespoon of the olive oil until evenly coated.

Step 2

Set the beef aside and allow it to marinate for at least 10 minutes.

Step 3

Heat 1 tablespoon of the olive oil in a large skillet over medium-high heat until the oil sizzles, about 2 minutes.

Step 4

Add the marinated beef to the oil and stir-fry until nicely browned on all sides, about 3-4 minutes.

Step 5

Add the garlic and the ginger to the beef mixture and sauté together until fragrant, about 1 minute.

Step 6

Transfer the beef mixture to a plate.

Step 7

In another bowl, whisk the remaining soy sauce, the vinegar, the sugar, the remaining cornstarch, and the sesame oil together until the sugar and the cornstarch fully dissolve.

Step 8

In the same skillet over medium-high heat, add the remaining olive oil, the broccoli, and the sauce mixture.

Step 9

Cover the skillet and let the broccoli simmer, stirring occasionally, until tender, about 2-3 minutes.

Step 10

Return the beef to the skillet and stir well to combine.

Step 11

Cook the stir-fry mixture until evenly coated with the thickened sauce, about 1 minute.

Step 12

Sprinkle the sesame seeds on top of the stir-fry.

Step 13

Serve with the steamed rice.