Put in an egg, a little white pepper, a little cooking wine and salt. Mix well and marinate for about 20 minutes. Prepare the ketchup, chopped green onion and ginger and set aside. Prepare a small bowl, pour a small amount of vinegar, salt, sugar and moderate amount of starch and water and mix well. Pour oil into a wok, when the oil temperature is 60-70% hot, put the meat into the wok one by one. When the meat turns golden brown, pull it out, continue to heat the oil over high heat, when the oil temperature is 80% to 90% hot, add the pork loin into the pan and deep fry it, so that the outer skin will be more crispy. Leave the oil in the bottom of the pan, add green onions and ginger and stir-fry to get a good flavor, then fish out the green onions and ginger. Pour in the tomato sauce and stir fry for a while, then add the tenderloin into the pan and stir fry together. Finally, pour the pre-mixed sweet and sour sauce into the pan and stir-fry evenly.
One, sweet and sour pork loin is one of the classic traditional Chinese dishes, the dish with pork loin as the main material, with flour, starch, vinegar and other condiments, sweet and sour, let a person's appetite; the dish in the Shaanxi Cuisine, Henan Cuisine, Zhejiang Cuisine, Lu Cuisine, Sichuan Cuisine, Huaiyang Cuisine, Cantonese Cuisine, Fujian Cuisine all have this dish.
The upper part of the character "菜" resembles the shape of two grasses, and the lower part is similar to the character "采". In the Han Dynasty script, the upper part of the character "菜" looks like two mountains, and the lower part is "木". In the Regular Script, the character "菜" is almost identical to the modern script, except that the upper part of the character "艹" has changed from the center to two segments. After the regular script, there was no great change until it developed into modern Chinese.
Third, the character "菜" consists of the character "艹" (艹) and "采" (采). From _, 采声. The word "艹" means grass, and the word "采" means to pluck something from a certain place, and the combination is to pluck the grass and then eat it, i.e., to arrive at its original meaning of vegetable. Because different kinds of vegetables can be cooked in different ways to make all kinds of dishes, so the word "菜" can also refer to the general term of cuisine.
Four, cai (pronounced cài) is a common standardized character (commonly used). This character is found in the small seal script in the Shuowen (说文). In its original meaning, it refers to vegetables. By extension, it can also refer to the general term of cuisine.