It is one of the basic ingredients of Iranian cuisine.

An excerpt from the article 13 facts about cinnamon

Since ancient times, it has been added to all kinds of soups, drinks, and sweets. Persian tea or biryani is particularly famous for the addition of cinnamon - a traditional dish made of minced meat, fat, onion, cinnamon, saffron, walnuts, and mint, which is served with baked lungs.