A Chinese-style stir fry sauce with tomato paste, rice vinegar, pineapple juice and ginger At Blue Dragon, we are inspired by the vibrancy of modern Asia, sharing new tastes and recipes to fuel your passion for food. Our Sweet & Sour Stir Fry Sauce is a sweet, yet tangy sauce, made of tomato paste, rice vinegar, pineapple juice and ginger. Ready in few simple and quick steps!