Navaratna South Indian Restaurant, Croydon

You'll find yourself on South End surrounded by the usual Croydon hustle, but step into Navaratna and you're somewhere else entirely. The kitchen takes South Indian food seriously: crispy dosas arrive at your table still steaming, idlis are fluffy without being boring, and the sambar tastes like someone's mum made it (in the best way). The room's unpretentious—proper neighbourhood restaurant vibes—but it's packed most nights with people who know what they're doing. Service keeps up with the energy without fussing, and prices sit comfortably in the mid-range, which means you're not overpaying for authenticity.