During the Safavid dynasty, a dish called Berian Polo (Nastaliq script: بریان پلو) was made with lamb or chicken, marinated overnight – with yogurt, herbs, spices, dried fruits like raisins, prunes or pomegranate seeds – and later cooked in a tannour oven. It was then served with steamed rice.
In its more original form, in some cities the dish is known as dam pokht/dam-pokhtak. The compound in Persian means "steam-cooked"—a reference to the steamed rice that forms the basis of the dish. This name is still in common use in Iran alongside "beriani". In Southeast Asian countries such as Burma/Myanmar, this older, general Persian term is in common use, as danpauk.
In the central Iranian city of Isfahan, Berian is made with cooked mutton or lamb, which is stewed and minced separately, and then grilled in special small round shallow pans in an oven or over a fire. The meat is generally served with powdered cinnamon in a local bread, usually "nan-e taftoun", but also occasionally "nan-e sangak".
Reference : Wiki