Shanghai-style sweet and sour chicken is a popular dish that combines the flavors of sweet and tangy sauce with crispy chicken. The chicken is first coated in a batter made with cornstarch and egg, then deep-fried until golden and crispy. The sauce is made with vinegar, sugar, ketchup, and soy sauce, creating a perfect balance of flavors. The crispy chicken is then tossed in the sauce, allowing it to absorb the sweet and sour flavors. This dish is often served with steamed rice or fried rice for a satisfying meal.