First of all, roast beef depends on which part of beef cattle it is. For example, you can fry shredded beef or sliced meat. For example, tendon is suitable for braised pork. Let me introduce a more convenient and simple way to eat. Stir-fried shredded pork with colored pepper and shredded green pepper. Mix beef with a little yellow wine, a little soy sauce (color matching), salt, sugar (preservation), 1 teaspoon of cornflour (to prevent beef from evaporating and aging and firewood during frying) and a little black pepper, marinate for 10 minute, put oil in a hot pan, add shredded beef and stir-fry for a while after the oil in the pan smokes, and take it out of the pan for later use. Matters needing attention are as follows: put in twice as much oil as usual, and stir-fried beef must be thick and short, so that the fried beef shreds will be tender and taste good. If you have to grasp the heat badly, you can also add baking soda or tender meat powder to the beef, but I think the fried meat tastes bad and fluffy.