Ingredients
- 1.5 pounds flank steak, sliced thinly against the grain
- 1/2 cup cornstarch
- 3 tablespoons vegetable oil
- 1/2 cup low-sodium soy sauce
- 1/2 cup water
- 2/3 cup dark brown sugar
- 2 teaspoons fresh ginger, minced
- 3 garlic cloves, minced
- 1/4 teaspoon red pepper flakes
- 4 green onions, cut into 2-inch pieces
- 1 teaspoon sesame seeds (optional, for garnish)
Instructions
- Prepare and Coat the Beef: Slice flank steak into thin strips about 1/4-inch thick, cutting against the grain for maximum tenderness. Place beef strips in a large bowl, add cornstarch, and toss thoroughly until evenly coated. Let rest for 5 minutes while you prepare the sauce.
- Create the Sauce: In a medium bowl, whisk together soy sauce, water, and brown sugar until sugar completely dissolves. Add minced ginger, garlic, and red pepper flakes. Stir well to combine.
- Sear the Beef: Heat wok or large skillet over medium-high heat until very hot. Add 2 tablespoons oil and swirl to coat. Working in two batches to avoid overcrowding, add half the beef in a single layer. Cook undisturbed for 1-2 minutes until golden on bottom, flip and cook another minute. Transfer to plate and repeat with remaining beef.
- Build the Glaze: Reduce heat to medium and carefully pour prepared sauce into the hot pan. Stir continuously for 2-3 minutes as sauce reduces and thickens into a glossy glaze.
- Combine and Finish: Return all seared beef to pan along with green onions. Toss everything together for 1-2 minutes until beef is completely coated and green onions soften slightly.
- Serve: Transfer to serving platter, sprinkle with sesame seeds, and serve immediately over rice or noodles.
Notes
Substitutions:
- Use skirt steak or sirloin instead of flank steak
- Replace cornstarch with potato starch or arrowroot for gluten-free
- Swap brown sugar with coconut sugar for refined sugar-free version
- Use tamari or coconut aminos instead of soy sauce for gluten-free
Storage:
- Refrigerate in airtight container for up to 4 days
- Freeze for up to 3 months
- Reheat in skillet with 1-2 tablespoons water to restore sauce consistency
Tips:
- Always slice beef against the grain for tender results
- Don’t skip cooking in batches – overcrowding causes steaming instead of searing
- Fresh ginger and garlic are essential for authentic flavor
- Sauce thickens quickly, so watch carefully during step 4
- Prep Time: 15 minutes
- Cook Time: 15 minutes
- Category: Main Course
- Method: Stir-Fry
- Cuisine: Chinese
- Diet: Gluten Free
