The tandoor is a thick-walled clay oven shaped like a large jar. You place charcoal or wood at the very bottom to generate heat that stays trapped inside the heavy structure. These ovens often reach temperatures of 900 degrees Fahrenheit. This environment allows you to cook food through radiant heat and convection at the same time. The clay walls absorb the thermal energy and radiate it back toward the center, ensuring that your meal is hit with heat from every possible angle.

The specific taste of tandoori food comes from a process of natural smoking. When you cook marinated meats on long skewers, the juices and fats drip down onto the hot coals. These liquids vaporize instantly and create a thick smoke that rises back up to coat the food. This is not a chemical additive but a physical reaction that happens within the clay walls. This cycle of dripping and smoking is what gives the meat its charred exterior and deep flavor.

You prepare bread by slapping the dough directly onto the scorching internal walls of the oven. The dough sticks to the clay and bubbles up immediately due to the intense heat. This creates the soft and crispy texture that defines high-quality naan. For meats, a yogurt-based marinade acts as a protective layer. The yogurt prevents the protein from drying out while the heat creates a dark, flavorful crust on the outside.