Step 2

Mix together the salt, cornstarch (reserve a little for the sauce), soy sauce and egg white to make the marinade. Toss the pork strips in the marinade and leave for 20 minutes.

Step 3

Mix the reserved cornstarch with a little water and the rice vinegar to make a starchy sauce. Set aside.

Step 4

Heat the oil in a wok or deep pan to 375°F. Fry the marinated pork strips in batches until golden brown and cooked through, 3 to 4 minutes. Remove and set on a plate.

Step 5

Leave a little oil in the wok. Set it over medium heat, add the tomato paste and sugar and cook, stirring, until the oil and sauce are fully combined.

Step 6

Add a splash of water and heat through, then add the fried pork strips. Pour in the starchy sauce and stir-fry until everything is coated and the sauce is glossy.

Step 7

Serve garnished with cilantro.