Tahchin is an Iranian rice dish primarily consisting of rice, yogurt, saffron, eggs and finally barberries are sprinkled on top. Some versions of the dish are more elaborate, folding in chicken fillets, vegetables, fish, or red meat. Tahchin can also be made with other ingredients such as walnuts and pomegranate. The texture of the crust depends on the type of rice that is used.
Tahchin is composed of two different parts: the thin tahdig part which includes the chicken fillets, saffron, and other ingredients at the bottom of the cooking pot, and the second part which is white rice. In restaurants, tahchin is mostly prepared and served without white rice.