2. Beef is first cut into toothpick-long squares. Cut the beef into 0.3 cm thick slices.
3. Chop the pepper for later use, prepare a big bowl, add cumin powder, spiced powder, pepper and salt to the beef, simply mix with soy sauce, oyster sauce and sesame oil, then cover with plastic wrap and refrigerate overnight.
4. Boil a pot of boiling water, blanch the bamboo sticks and disinfect them. String the marinated beef with toothpicks in turn, put it in the middle and lower layers of the preheated oven, and roast it at 160 degrees, 170 degrees 10 minutes, then roast the marinated beef sauce and pour off the roasted water.
5. Put the beef skewers back in the middle and lower layers of the oven again, and bake them at 165 degrees for 8 minutes. Take out the beef kebab, turn it over and continue to roast the beef kebab, then take it out and sprinkle with appropriate amount of white sesame seeds.