PETER: This soup combines two of my favorite frugal, five-minute soups, soups that kept my family fed for decades when we had limited resources: tomato egg soup and egg flower soup. We have a lot of Chinese tourists who come visit Fang and Nanking, and after eating so many of their meals at Western restaurants, they are always hankering for a proper Chinese meal, something to soothe the soul. Do you know what their most-requested dish is? Tomato egg soup! T