Speaking of Chinese restaurants, there’s a term I like that I see in Hokkien speaking parts of the world. I like it better than ‘authentic’ (also silly to claim you’re an authentic restaurant in Singapore / Taiwan / Malaysia)
They use 古早味 (ancient or nostalgic flavor) to signal that they cook things old school way, or it’s food that reminds you of your childhood. How far back? Nostalgia is a helluva drug so literally what your grandparents ate and no further I think