Classic Sweet and Sour Sauce

This wonderfully piquant sauce is a healthy version of the classic Chinese staple sweet and sour sauce. It is delicious with crispy baked chicken strips, rice and noodles. Alternatively chill and serve as a dipping sauce.500/600 g tin of pineapple chunks or rings400 ml vegetable stock400 ml white wine vinegar300 ml orange juice100 ml soy…