There is a moment, when a dish arrives from the tandoor, that is difficult to replicate by any other cooking method. The surface is lightly charred, the interior is tender, and there is a depth of smokiness that is not added after the fact — it is cooked into the food by the oven itself. Understanding why requires understanding what a tandoor actually is, how it works, and what makes it so different from any other heat source in a professional kitchen.
What Is a Tandoor Oven?
A tandoor is a cylindrical clay oven, traditionally made from clay and fired with charcoal or wood. Its origins trace back thousands of years across the Indian subcontinent and Central Asia, where it was used as both a cooking vessel and a communal heat source. The design has changed remarkably little over the centuries — a testament to how well it works.
Modern tandoor ovens used in restaurant kitchens maintain the same basic construction: a thick clay or ceramic cylinder, typically around a metre tall, open at the top, with a small vent at the base to draw air through the charcoal or gas burner at the bottom. The clay walls absorb heat from the fuel and radiate it back intensely and evenly — a form of cooking that operates on entirely different principles from a conventional gas or electric oven.
How Hot Does a Tandoor Get?
This is where the tandoor becomes remarkable. A conventional domestic oven reaches around 220 to 250°C at its highest setting. A well-fired tandoor routinely operates between 400 and 480°C — and can exceed that during peak heat. Some traditional wood-fired tandoors reach temperatures above 500°C.
That difference in temperature is not merely a matter of degree. It fundamentally changes what happens to food during cooking. At 480°C, the surface of a piece of marinated chicken reaches its Maillard reaction — the chemical process responsible for browning, crust formation, and complex flavour development — almost instantly. The interior of the meat, protected by the marinade, cooks through from the intense radiant heat of the clay walls without direct contact with flame.
The result is a texture and flavour profile that cannot be achieved by grilling, roasting, or pan-cooking: a lightly charred, slightly smoky exterior with a juicy, deeply flavoured interior that retains the character of its marinade rather than being overwhelmed by it.
What the Tandoor Does to Meat
Meat cooked in a tandoor is typically skewered and lowered into the oven vertically, suspended over the heat source at the base. This position exposes the meat to three simultaneous forms of heat:
- Radiant heat from the clay walls — intense, even, and reaching temperatures that sear the surface rapidly
- Convected heat from the hot air within the cylinder — which cooks the interior evenly
- A small amount of direct heat from the burning charcoal below — which contributes the characteristic smokiness
The combination produces meat with a specific quality that Indian cuisine has built centuries of recipes around. Chicken tikka — chunks of marinated chicken cooked on skewers in the tandoor — achieves its characteristic colour, slight char, and tender pull from this cooking environment. The marinade of yoghurt and spices acts as both a flavour carrier and a protective coating that prevents the intense surface heat from drying the meat before the interior has cooked through.
At Rocksalt on Cotham Hill, the kitchen uses a tandoor oven as the centrepiece of its Indian cooking. Dishes including Basil Paneer Tikka and Malai Broccoli are prepared in the tandoor, giving them the characteristic smoky depth and lightly charred exterior that marks genuinely oven-cooked food from restaurant-grade equipment. You can see the full range of tandoor dishes on the Rocksalt menu.
What the Tandoor Does to Bread
The second great use of the tandoor is naan bread — and once you understand how it is made, the difference between a tandoor naan and an oven-baked flatbread becomes obvious.
Naan dough is slapped against the inner wall of the tandoor, where it adheres to the hot clay surface. At 480°C, the bread cooks in under two minutes. The direct contact with the clay wall creates a slightly crisp, slightly blistered base while the intense ambient heat puffs the bread rapidly — creating the characteristic airy interior and the charred spots on the surface that are the hallmark of genuine tandoor bread.
The result is fundamentally different from bread baked on a conventional tray. The clay imparts a mild earthiness, the direct contact creates a crispness on one side, and the speed of cooking traps moisture inside the bread rather than allowing it to evaporate — which is why a fresh tandoor naan tears open to release a puff of steam.
The Tandoor at Rocksalt
Rocksalt has used a tandoor oven as part of its kitchen setup since the restaurant opened on Cotham Hill. It is not an ornamental feature — it is the primary cooking method for a range of the menu’s most popular dishes, and it represents a commitment to authentic Indian cooking technique rather than a simplified restaurant approach. If you would like to know more about the story behind the kitchen and the cooking philosophy at Rocksalt, visit the Our Story page.
Frequently Asked Questions
How hot does a tandoor oven get?
A restaurant tandoor typically operates between 400 and 480°C, with some traditional wood-fired ovens reaching above 500°C. This is roughly twice the temperature of a conventional domestic oven at its highest setting, which is what gives tandoor-cooked food its characteristic char, texture, and depth of flavour.
Why is tandoor chicken different from grilled chicken?
Tandoor chicken is cooked at far higher temperatures than a standard grill, and the radiant heat from the clay walls surrounds the meat on all sides simultaneously rather than cooking from below. The marinade — typically yoghurt-based — acts as a protective coating that allows the surface to char while the interior cooks through evenly. The result is a specific texture and smokiness that a grill cannot replicate.
Why does tandoor naan taste different from regular bread?
Tandoor naan is cooked by pressing the raw dough directly onto the inner clay wall of the oven. The direct contact with the clay creates a slightly crisp, blistered base, while the intense ambient heat causes the bread to puff rapidly, trapping moisture inside. The speed of cooking — typically under two minutes — and the clay surface both contribute flavour and texture qualities that are not achievable in a conventional bread oven.
Is a tandoor used at Rocksalt Bristol?
Yes. Rocksalt uses a tandoor oven in its kitchen on Cotham Hill. Several dishes on the menu — including Basil Paneer Tikka and Malai Broccoli — are prepared in the tandoor. You can view the full menu at rocksaltbristol.co.uk/menu.
Can vegetarians and vegans eat tandoor-cooked food?
Yes. The tandoor is used for vegetables, paneer (Indian cheese), and bread as well as meat. Dishes like Basil Paneer Tikka and Malai Broccoli are cooked in the tandoor and are suitable for vegetarians. Naan bread is also tandoor-cooked, though it typically contains dairy — the kitchen is happy to discuss dietary requirements when you book or order.
Want to Try Tandoor Cooking in Bristol?
The best way to understand what a tandoor does to food is to taste the result. Rocksalt on Cotham Hill is open Tuesday to Sunday from 5pm, with last orders at 10:45pm. Book a table to experience the tandoor dishes alongside the full Indian and Chinese menu.
Reserve your table — Book a Table at Rocksalt Bristol