Steps of Making Sweet and Sour Pork
1. Slice the tenderloin into strips, and marinate with a pinch of salt and one spoon of cooking wine for about 20 minutes.
2. In a bowl add more water, starch, and an egg white. Put the tenderloin into the bowl, then stir them together.
3. In a bowl mix two spoons of vinegar, three spoons of sugar, a pinch of salt, starch, and water; and stir the starchy sauce.
4. Pour oil into a wok and heat to 190°C (375°F) for deep-frying, and add the pork mixture.
5. Fish out all the fried pork when it becomes golden, and drain the oil back into the wok.
6. Put tomato sauce in the wok and continue to heat the oil until the sauce is fully immersed in it.
7. Pour in the prepared starchy sauce.
8. As the starchy sauce turns red and thick, add the pork, and stir quickly, before removing from the heat.
9. Serve on a plate.