I went to this awesome Shanghainese place inside of Yokohama Sogo on the 4th floor with some friends. We went on the weekend for lunch and It was packed with older women and housewives and if you sit by the window, you get a great view of the Yokohama Bay. We got there around noon and the place was already almost packed with only a few open tables left. I had the Vietnamese Cold noodle plate with oolong tea for 1150yen and my friends both had the special of the day which was a cold sesame noodle lunch set that comes with a hot tea and dessert for 1500yen. Everything was delicious and I recommend this place if you want decent Shanghainese food near Yokohama station.
Address // Yokohama Sogo 4F, 2-18-1, Takashima, Nishi-ku, Yokohama-shi, Kanagawa-ken, Japan (map)
Phone Number // 045-465-3176
Website // http://www.chayu.net/yokohama.html