Step1:Cut the tenderloin into strips. It's about the same size as your fingers. Marinate for half an hour with soy sauce, five spices and salt. Then mix the flour, flour and water into powder water. Boil the oil under the pot until it's frothy. Fry the marinated loin with the raised flour in an underwater oil pan. Fry until it's almost done and then fry until it's burnt yellow. Start to control the dry oil. Stir fry a little oil and ketchup in the wok. Stir fry the fried sirloin until it's wrapped in ketchup. Sprinkle the cooked sesame seeds in the wok.
Cooking tips:There are skills in making delicious dishes.