This beef with Chinese broccoli recipe is a bit of a change-up from regular beef and broccoli. You can also substitute broccolini in this dish if you like but it's worth the time to seek out Chinese broccoli for this dish!
2tablespoonscornstarch(mixed into a slurry with 2 tablespoons water)
Trim off any excess fat and fibrous membrane from the flank steak, and use a sharp knife to slice ¼-inch thick pieces about 2½ inches wide at a 45 degree angle. Be sure to cut the beef against the grain. If you’re knife skills are not that good, place the beef into the freezer until it is firm but not frozen; slicing the beef will be much easier!
Add 1 teaspoon each of cornstarch, oil, and soy sauce to the beef in a bowl. Use your hands to massage these ingredients into the beef and set aside to marinate for 20 minutes.
After the beef has marinated, heat a wok over high heat. Add a tablespoon of oil. When the oil starts to smoke, sear the beef for 30-60 seconds, just until browned. Remove from the wok and set aside. Add 2 more tablespoons of oil to the wok along with the ginger. Let the ginger caramelize for 15 seconds. Add the garlic and Chinese broccoli, and stir-fry for 1 minute, making sure the vegetables are cooking evenly. The Chinese broccoli will start turning a bright green.
Add the beef, oyster sauce, soy sauce, salt, sugar, sesame oil and hot chicken stock and stir-fry until mixed thoroughly. (Use hot chicken stock so you don’t kill the stir-fry party going on in the wok by reducing the temperature of the ingredients. Nothing worse than adding cold chicken stock and then having to wait minutes for the liquid to get back to a boiling, sizzling state.)
Once the liquid comes to a boil, push the beef and vegetables away from the middle of the wok and stir in the cornstarch slurry gradually to thicken the sauce. Use only what you need! Mix everything until the beef and vegetables are thoroughly coated. If you like more sauce, you can increase the chicken or beef stock, seasonings and cornstarch accordingly.