01 -
First things first, slice that flank steak against the grain into thin pieces, about ¼-inch thick. This is where the magic happens for tender beef, trust me! In a medium bowl, toss the beef with a tablespoon of soy sauce, a tablespoon of cornstarch, and a teaspoon of sesame oil. Give it a good mix with your hands – it should feel a little slimy, that's normal. Let it hang out for at least 15-20 minutes while you prep everything else. This little step is what makes the beef so velvety, honestly, it's a game-changer!
02 -
While the beef is marinating, get your broccoli ready. Bring a pot of water to a boil, add a pinch of salt (this helps keep the broccoli vibrant green), and toss in your broccoli florets. Let them cook for just 2-3 minutes, until they're bright green and tender-crisp. You don't want them mushy, so keep an eye on them! Drain them immediately and, if you're feeling fancy, give them an ice bath to stop the cooking, though I often skip this step when I'm in a rush. Set aside.
03 -
In a small bowl, whisk together the remaining soy sauce, oyster sauce, beef broth, sugar, and the remaining cornstarch. Make sure the cornstarch is completely dissolved, or you'll get lumps later, and nobody wants that! I always give it a little taste here to see if it needs more sweetness or saltiness. Sometimes I add a tiny bit more sugar if I'm feeling it. Set this aside; it’s going to come together super fast once the cooking starts!
04 -
Heat a large skillet or wok over high heat. Add a tablespoon of neutral oil. Once it's shimmering, add half of your marinated beef in a single layer. Don't overcrowd the pan, or the beef will steam instead of sear, and we want a nice brown crust! Cook for 1-2 minutes per side until browned, then remove to a plate. Repeat with the remaining beef, adding a little more oil if needed. This step is crucial for flavor, so don't rush it!
05 -
Reduce the heat to medium-high. Add another half-tablespoon of oil to the pan. Toss in your minced garlic and grated ginger. Sauté for about 30 seconds until incredibly fragrant – oh, the smell! It's amazing. Then, add the blanched broccoli to the pan and stir-fry for another minute or two, letting it soak up those delicious garlicky-ginger flavors. This is where it all starts to come together, you'll see!
06 -
Return all the seared beef to the pan with the broccoli. Give your sauce mixture another quick whisk (cornstarch settles!) and pour it over the beef and broccoli. Stir constantly for 1-2 minutes, watching the sauce thicken beautifully. It should coat everything nicely. Once it's glossy and thick, you're done! Remove from heat, drizzle with a tiny bit more sesame oil if you like, and serve immediately. The aroma in your kitchen will be incredible, I promise!