Ingredients 1/2 cup fruit juice 1 1/2 tablespoons brown sugar 1 tablespoon soy sauce 1 1/2 tablespoons white vinegar 1 1/2 tablespoons tomato sauce 1 tablespoon cornflour Instructions Step 1 Combine fruit juice, sugar, soy sauce, vinegar and tomato sauce in a saucepan. Bring to a gentle simmer. Cook for 5 minutes, then add cornflour dissolved in a little hot water. Stir until it thickens, to make enough sauce for a stir-fry for four.