The team behind a swath of popular Ontario Vietnamese restaurants, including one particularly viral banh mi shop, is finally expanding into Toronto.In the summer of 2025, Thornhill's seasoned banh mi lovers and the newly initiated alike only had one name on their lips: Banh Mi Nana.Created by the family team behind other Thornhill and Markham Vietnamese staples Electric Piggy and Nam 2, the banh mi shop was an immediate smash hit, selling through 2000 sandwiches in its first day and regularly selling out before closing time in the days that followed.The key? According to Michelle, one of the restaurant's owners, it all comes down to attention to detail. At Banh Mi Nana, every loaf of bread, each deli meat, the pork floss and even the butter is made by hand. Evidently, it's an approach that works.After the smashing success of Banh Mi Nana, the Nam family is now gearing up to expand into Toronto city limits, opening a new restaurant called, fittingly, Nam 6ix, in Sc...