take another pot, add oil, minced ginger and garlic, stir-fry until fragrant, add more sugar and stir-fry, then add some water, add some salt and vinegar, and cook until the soup in the pot is a little thick and sticky, then put the fried tenderloin into the pot and stir it, and just turn it over. But the color may not be as good as ketchup. O (∩ _ ∩) O. It is best to do it in two steps. Can ensure the taste of meat.