Stir-fry the beef strips.Cut the beef into strips.To ensure tender beef, marinate the beef strips with seasonings and 2-3 tablespoons of cooking oil for 20-30 minutes before stir-frying over high heat, then quickly remove from the pan once done.

Soften tougher beef strips by soaking them in water with a small amount of baking soda for a few minutes before cooking, drain well before preparing.