At first, people thought the city's favorite Chinese restaurant in San Francisco must be located in Chinatown, but to my surprise, many people said it is inside the One Rincon Center - Yank Sing. Here are some online comments: "Once a year I come to San francisco, I have to go Yank Sing" or "Every week I go Yank Sing to have deem sum". The authoritative Zagat food guide praised Yank Sing's deem sum saying "They are the Rolls-Royce of deem sum" ...