Step 1: Preparation

Step 2: 1. Crack the egg into a bowl. Separate the egg white and yolk.

Step 3: Sweet and Sour Pork

Step 4: 2. Slice the pork tenderloin into strips.

Step 5: 3. Prepare the marinade using a pinch of salt, one teaspoon of starch, two teaspoons of light soy sauce, and an egg white.

Step 6: 4. Marinade the pork strips for about 20 minutes.

Step 7: 5. Put the remaining starch in a bowl. Add some water and vinegar to make a starchy sauce.

Step 8: Sweet and Sour Pork

Step 9: Cooking Instructions

Step 10: 1. Pour the cooking oil into a wok and heat to 190°C (375°F). Add the marinated pork strips and fry them until they turn brown. Remove the cooked pork from the wok and place on a plate.

Step 11: 2. Leave some oil in the wok. Put the tomato sauce and white sugar into the wok, and heat until the oil and sauce are fully combined.

Step 12: 3. Add some water to the wok and thoroughly heat the sweet and sour sauce before adding the pork strips to it.

Step 13: 4. Pour in the starchy sauce. Stir-fry all the ingredients until the pork and sauce are thoroughly mixed together.

Step 14: 5. Serve on a plate and add some coriander for decoration.