1. Cut the tenderloin into strips, put it in a bowl, add a spoon of cooking wine, a spoon of light soy sauce, a spoon of balsamic vinegar, and a spoon of salt, and marinate for half an hour
2. 2 spoons of flour, 2 spoons of starch, 4 spoons of water, mix well
3. Tenderloin wrapped in flour and deep-fried until golden brown
4. Heat oil in a pot, add appropriate amount of tomato sauce, 1 spoonful of sugar, 1 teaspoon of balsamic vinegar, and appropriate amount of starch water. Add the fried tenderloin and stir-fry evenly.
