To make Mongolian beef, first slice flank steak into thin strips against the grain. Mix the steak with cornstarch and let it sit for about 10 minutes. Heat oil in a wok or a large pan and stir-fry the beef until browned. Remove the beef from the pan and set aside. In the same pan, sauté chopped garlic and ginger until fragrant. Add sliced onions and stir-fry for a few minutes. Add the beef back to the pan and season with soy sauce, hoisin sauce, and sugar. Stir-fry for a few more minutes until everything is coated in the sauce. Serve hot with rice.\n\n
How do you make Mongolian beef?