Sweet and sour pork is a classic Cantonese dish called u0022gu lou yoku0022.u003cbr/u003eChinese writers linked the sweet and sour pork to the famous sweet and sour spare ribs u0022tang cu pai guu0022 originating in the Jiangsu province and well known for their distinctive vinegary, sweet flavor.u003cbr/u003eIn China, the sweet and sour sauce is mostly eaten with fish dishes or is served on a separate dish for dipping.