Fish fillet with sweet and sour sauce is a delightful dish featuring tender fish fillets coated in a crispy batter and served with a tangy, sweet sauce. The sauce, made from a combination of vinegar, sugar, ketchup, and soy sauce, provides a perfect balance of sweetness and acidity. Accompanied by vegetables like bell peppers, onions, and pineapple, the dish offers a colorful and flavorful contrast.