A new Ontario Vietnamese restaurant is already dominating the scene after selling 2,000 banh mi sandwiches on its first day in business. That's where Banh Mi Nana comes in. "In Vietnam, banh mi isn't just fast food — it's culture, tradition, and technique perfected over decades," she explains. It's also about ushering due respect for the art of banh mi into the minds of local consumers who have historically been unfamiliar with it, thus welcoming — in theory, at least — opportunity for a higher calibre of banh mi shops in the province. Banh Mi Nana is located at 505 Hwy.