First Step: Prepare Ingredients Start by slicing the flank steak thinly across the grain into ¼-inch strips. Mince fresh ginger and garlic finely. Slice the green onions, separating the white parts from the green parts for layered flavor usage.

Second Step: Make the Sauce In a small bowl, mix low-sodium soy sauce, water or broth, and brown sugar. Stir well until the sugar dissolves completely to create a balanced, slightly sweet soy-based sauce.

Third Step: Coat the Beef Place the sliced beef in a mixing bowl and toss it with half of the cornstarch, ensuring each piece is lightly coated. Shake off any excess cornstarch to avoid clumping during cooking.

Fourth Step: Sauté Aromatics Heat 2 teaspoons of vegetable oil in a large skillet or wok over medium-low heat. Add minced ginger and garlic, stirring gently until fragrant, about one minute. Remove these aromatics from the pan and set aside.

Fifth Step: Sear the Beef In the same pan or a separate wok, heat 1 to 2 tablespoons of neutral oil over medium-high heat. Sear the beef slices in batches, cooking each side for 1 to 2 minutes until browned and crisp but not fully cooked. Transfer the cooked beef to a plate and set aside.

Sixth Step: Thicken the Sauce Return the ginger and garlic to the pan. Pour in the prepared soy and sugar sauce, simmering it over medium heat for 3 to 5 minutes until it thickens slightly into a glossy glaze. Add dried chili peppers or red pepper flakes at this stage if using for a spicy kick.

Seventh Step: Combine and Finish Cooking Return the seared beef to the pan, tossing to coat evenly with the thickened sauce. Cook for an additional 1 to 2 minutes until the beef is heated through and coated in the flavorful glaze.

Final Step: Add Green Onions and Serve Stir in the white parts of the green onions during cooking to develop flavor. Reserve the green parts to sprinkle on top just before serving for a fresh crunch and vibrant color. Serve hot over steamed rice with optional steamed vegetables like broccoli or bell peppers for a balanced meal.