El Alquimista

You're walking down Stockwell Street in Greenwich and suddenly the smell of coriander, lime and grilled meat pulls you in. El Alquimista is exactly what you want when you're craving proper Peruvian food—the kind that doesn't apologise or dilute itself for London palates. The kitchen knows what it's doing with ceviche (the fish is properly fresh), the anticuchos come charred and juicy, and they're clearly serious about their pisco selection. It's the sort of place where locals actually book ahead, not because it's fashionable, but because word gets around when something's genuinely good.