Sanmiwago, a Taiwanese food stall that landed on the New York Times list of the city’s best affordable restaurants, is opening another location. The business has a “coming soon” sign on a corner storefront in the Financial District at 62 William Street and Cedar Street. The restaurant started as a stall in the Mott Street Eatery food court before opening a full storefront in Chinatown earlier this year. It’s known for its steamed and pan-fried dumplings filled with chicken, pork, cabbage, and chives.