One of SF's biggest and most well known dim sum palaces, Yank Sing, is shuttering its largest location, the 27-year-old restaurant at Rincon Center.Business clearly has not been strong enough at Yank Sing in recent years, because the once super-popular dim sum restaurant is closing its biggest locat ion, which opened in 1999. The owners tell the Chronicle today that their lease at Rincon Center is up, and they've chosen not to renew. The smaller location of Yank Sing at 49 Stevenson Street, which opened in 1974, will remain open.The last day for the Spear Street location will be September 20."Thank you for being part of our story at Rincon, we’re grateful for the many memories we’ve shared there and look forward to continuing our story together at Yank Sing Stevenson," said co-owner Vera Chan Waller in a statement to the Chronicle.Chan Waller is a third-generation owner of the business, with her grandparents, George and Alice Chan, having opened the original Yank Sing at Broadway and Powell in Chinatown in 1958.The family operated multiple locations including the Stevenson Street one, before landing the enormous, banquet-hall-like space at Rincon Center, when that building was being redeveloped.A Yank Sing server with a cart serving in the Rincon Center atrium in 2022, via YelpAs recently as 2017, former Chronicle critic Michael Bauer wrote about how constantly packed the Rincon location was in his entry about it in the Top 100, noting that the restaurant set up more tables and spilled out into the atrium of the Center on weekends, which doubled their capacity to 500, "yet it’s still hard to get a table."That obviously changed, as it did for many downtown restaurants, during the pandemic years, even tough Yank Sing is one of the few dim sum places in town that brought back cart service, with most doing away with it entirely.The restaurant got some negative attention twelve years ago, when it was wrapped up in a wage-theft lawsuit, and was ordered to pay $4 million in back pay to current and former employees.Yank Sing is still regularly included on lists of the best dim sum in San Francisco, with particular attention given to their xiao long bao, though it has plenty of competition these days, including from newer-school operations like HK Lounge Bistro and Palette Tea House. ...read more read less