Though immensely popular, sweet-and-sour pork is not an authentic Chinese dish and was probably invented here in the United States to suit American tastes. It is most often served with a mix of carrot, green and red bell pepper, pineapple, and onion, and glazed with a sweet-and-sour sauce that includes a heavy dose of good old ketchup. We've tried to make it successfully without the ketchup in order to stay truer to it's Asian roots, but it just isn't the same as that old standby we used to eat as kids back in the heyday of the mom-and-pop Chinese restaurant. Food for Thought: According to press reports, China released a new set of stamps to celebrate the Year of the Pig, which began on February 18, 2007. They are scratch and sniff, lick and taste stamps that smell like sweet-and-sour pork when you scratch the front, and taste like the dish when you lick the back. From the Take-Out Menu Cookbook.