To marinate beef: Add corn flour and soy sauce to the beef strips. Toss together to coat and marinate well for 5 minutes.
2. Step
To prepare sauce: Stir cornstarch and beef stock together until cornstarch is dissolved, then add soy sauce and brown sugar and mix well until combined.
3. Step
In a large skillet, heat 2 tbsp of oil and add the ginger, garlic, sliced carrots, broccoli florets and sliced bell peppers into the skillet. Saute and set aside.
4. Step
Add beef strips in a single layer to the same skillet and cook for 5 minutes, turning constantly to easily brown.
5. Step
Add the sauce and bring to a boil. Cook for 2 minutes.
6. Step
Once the sauce has thickened, toss with sauteed vegetables and garnish with roasted sesame seeds.
