The tandoor oven originated in the Indus Valley Civilisation (circa 2600 BCE); naan as a leavened flatbread baked in tandoors is documented in Mughal court records (16th century) where it was served at royal breakfasts
Naan is leavened flatbread baked against the interior wall of a tandoor clay oven (तंदूर) at 350–400°C — a technique that produces the characteristic blistered surface, chewy interior, and smoky char impossible to replicate in a conventional oven. The dough is wet and extensible — significantly higher hydration than roti dough — allowing it to be stretched thin and slapped against the clay wall without tearing. The adhesion to the clay wall is the cooking mechanism: the naan hangs vertically while the tandoor's radiant heat bakes the exposed side and the clay wall conducts heat through the back, cooking both surfaces simultaneously. The blistering is a Maillard reaction happening at points of direct flame contact.
Naan's chewy, blistered character is the textural foundation of North Indian restaurant meals — it scoops, tears, and absorbs dal, curry, and kebab simultaneously, its slight char adding a smoky dimension that plain rice cannot provide.
{"Dough hydration: higher than chapati — approximately 60–65% water ratio; the wet dough stretches to the required thinness without tearing when slapped against the clay wall","Leavening: yeast (commercial or wild) plus yoghurt — yoghurt provides lactic acid that strengthens gluten structure and contributes flavour; both are required for the characteristic naan chew","The slap technique: the baker shapes the dough on a cloth pad, stretches it oval, then slaps it firmly against the clay wall with an even, single motion — hesitation or multiple touches create irregular adhesion","Baking time: 90–120 seconds in a properly hot tandoor; the naan is ready when the exposed surface blisters and the edges begin to char slightly at contact points"}
Restaurant workaround for home cooking: bake naan on a preheated cast iron skillet under a preheated broiler/grill as close to the heat element as possible — the broiler provides radiant top heat while the cast iron provides bottom conduction, approximating (not replicating) the tandoor environment. Authentic tandoor marks (black char blisters) cannot be reproduced at home oven temperatures.
{"Under-hydrated dough — stiff dough cracks when slapped against the clay wall and falls off rather than adhering; wet dough is essential for wall-baking","Replicating tandoor naan in a conventional oven — the chemistry of clay wall conduction combined with 400°C radiant heat cannot be replicated; oven naan cooks via dry heat from below, producing a different (acceptable but different) product"}