KATHY: “Eat more fish. Eating fish will make you smart.” That is what my pó po would always say to me and all the grandkids. Pó po was well versed in Cantonese cuisine, which meant she cooked up a lot of fish for us, but our favorite was always this soup. It was the inspiration for the famous white river soup we serve at Fang restaurant, which is particularly popular among our Asian clientele. I can’t tell you how many times we’ve had people traveling from