A humble sauce can do a lot to bring a plate of food together, whether it be a no-frills fast ... five-ingredient recipe for an amazing, restaurant-style sweet-and-sour sauce.

2 Sweet and sour sauce Heat some oil in a large pan and fry the ... 4 Return the onion mixture to the pan, followed by the orange juice, lemon zest, vinegar, and soy sauce. Season with salt and pepper ...