I heard a Chinese gourmet talking on the radio, saying that sweet and sour sauce is designed to compliment/disguise the possibility of a muddy taste in prawns or shrimp. He said that sweet and sour pork is served in China "in restaurants, for foreigners", and he also said that sweet and sour chicken is unheard of in traditional Chinese cuisine.
Then he was served up with some sweet and sour chicken, and he said that the sauce was a long way different from anything he ever had in China. His actual words were that it was "interesting to experience this new Western dish"!
Well, I would like to know what goes into sweet and sour sauce. I'd like to know what the people in my local takeaway use, and I'd like to know what goes into the traditional version the Chinese gourmet was talking about.