Cooking Steps

1. 

   Step1:1. Cut the tenderloin into 2cm thick pieces. Stir the starch into a thick paste. Put the meat in the starch and mix well. 2. Pick out a bowl of juice with ketchup, sugar and vinegar. 3. Pour one third of the oil in the pan. When the oil is boiling, put the stir fried meat in the pan and fry it until golden, that is to say, out of the pan. 4. Put a little oil in the pan. Put the fried meat in the pan and stir it for a while. Pour the selected juice into the pan Stir fry for a while and spray white vinegar on it to make it taste better. Sprinkle the prepared scallion on it to make it out of the pot.