2. Absorb the surface moisture of diced beef with kitchen paper until it doesn't stick to hands or kitchen paper;
3. Sprinkle a proper amount of salt and freshly ground black pepper on the surface of beef, knead it evenly by hand, and let it stand for curing 15~20 minutes;
4. Onions and colored peppers are cut into pieces about the size of beef;
5, the cast iron pot does not need to put oil, heat and smoke, and add beef granules;
6. Fry the beef granules until they are slightly burnt on all sides, and take them out for later use;
7. Peel the garlic, cut it into thick slices, reheat the pot, and fry the garlic slices in low heat. If there is a lot of oil oozing from the fried beef here, there is no need to put oil in it. If it is less, add some cooking oil appropriately.
8. Then add onion slices and continue to stir fry until the onion is transparent;
9. Add colored pepper slices and stir-fry over high heat;
10, add beef, oyster sauce, salt and sugar, and stir well;
1 1. Sprinkle a little sesame oil and freshly ground black pepper according to your personal taste before cooking, and you can eat it.