The dish gave its name to the street it's served on — Hàng Sơn Street was renamed Chả Cá Street after the family who invented it.
Chunks of catfish marinated in turmeric and galangal are grilled, then finished tableside in a sizzling pan of oil with scallion and heaps of fresh dill, eaten over rice noodles with peanuts and pungent shrimp paste. The same family has served it from the same Old Quarter address since 1871.