Bà Ba (Ba Ba Peckham) Southern Vietnamese Restaurant

You'll find yourself on Peckham Rye surrounded by people who genuinely know what they're doing with fish sauce and charcoal. The menu reads like a love letter to the Mekong Delta: catfish so clean it makes you reconsider everything else you've eaten, bánh mì that actually justifies the hype, and pho broths simmered long enough to make you wonder why other places bother. It's the sort of place where you sit elbow-to-elbow with locals, the dining room's a bit cramped and chaotic, and that's precisely the point. Prices won't destroy your overdraft, and the 4.5-star rating isn't there by accident.