Ingredients: beef (sliced) Ingredients: onion (diced), green pepper (diced) Seasonings: black pepper, salt, soy sauce, cooking wine, monosodium glutamate, chicken essence, starch, raw flour. Practice: 1, put black pepper, salt, soy sauce, cooking wine, monosodium glutamate, chicken essence and raw flour into a bowl. 2. Stir the beef slices evenly with starch, put the oil in the pot and heat it to 70%. The beef in the pot is stir-fried and discolored. Serve immediately. 3. Leave a little oil in the pot, stir-fry the onion and green pepper for one minute, add the beef and continue to stir-fry, then pour the starch into the seasoning bowl and stir evenly. 4. Put the spaghetti on a plate (or bowl) and pour the fried black pepper beef fillet on the noodles, and it becomes a delicious black pepper beef fillet spaghetti. Note: because you need to pour juice, you can put more water.