In order to prepare Stir Fry Beef, you will need the following ingredients: shallots, garlic, beef, and greens. Marinate the beef and set it aside. Chop up some garlic and shallots. Pour a bit of oil in a wok. When the oil is warm, add the garlic and shallots. Chop up some greens. Stir the garlic and shallots well. Add the beef to the pot. Stir frequently. When the beef is done, add the chopped greens. Stir well. When the greens begin to wilt a bit, then it is done. The greens should be tender crisp. Pour into a serving dish and serve.