Sweet and Sour Pork

1. Crack the egg into a bowl and separate the white from the yolk.
2. Cut the pork tenderloin into strips.
3. Make the marinade with a pinch of salt, one teaspoon of starch, two teaspoons of light soy sauce and the egg white.
4. Marinate the pork strips for about 20 minutes.
5. Put the rest of the starch in a bowl, add a little water and the vinegar, and stir into a starchy sauce.
6. Pour the cooking oil into a wok and heat to 190°C (375°F). Add the marinated pork and fry until browned, then lift out onto a plate.
7. Leaving some oil in the wok, add the tomato purée and sugar and heat until the oil and sauce come together.
8. Add a splash of water and heat the sweet and sour sauce through, then return the pork strips.
9. Pour in the starchy sauce and stir-fry until the pork is thoroughly coated.
10. Serve on a plate, garnished with coriander.

Tips from the ZestyPlate Kitchen

• Marinate the pork so it stays tender and seasoned through.
• Fry it in properly hot oil so the strips crisp up rather than soak up grease.
• Have the starchy sauce mixed and within reach before you turn on the heat.
• Tune the sweet against the sour at the end using the sugar and vinegar.