Jiangsu-style Sweet and Sour Mandarin Fish is a popular dish in Chinese cuisine that originates from the Jiangsu province. It is made with fresh whole fish, coated in cornstarch and deep-fried until crispy. The fish is then topped with a sweet and sour sauce made with sugar, vinegar, tomato paste, and soy sauce. The sauce is then poured over the fried fish and garnished with mandarin oranges, pineapple, and bell peppers. The dish is known for its crispy texture and colourful appearance.