Ingredients: 500 grams of preserved beef, one garlic ball, Chili powder, lobster sauce and pepper. Seasoning: tea oil, oyster sauce and chicken essence: 1. Steaming preserved beef in a steamer for 10 minute, taking out slices, soaking in warm water for a few minutes, taking out and draining; 2. Peel and chop garlic balls, and chop lobster sauce; 3. Heat tea oil in the pot and stir-fry beef slices. 4. Stir-fry minced garlic, lobster sauce and Chili powder in the remaining oil, and pour in the fried beef jerky and mix well; 5. Spray a little water and simmer, pour in oyster sauce, sprinkle with pepper and chicken essence and mix well.