Kolkata Biryani, also known as Calcutta Biryani, is a unique variation of biryani that originated in the city of Kolkata in India. It is known for its subtle flavors and use of potatoes. The key ingredients in this biryani are basmati rice, meat (such as chicken or mutton), potatoes, and a blend of spices. The meat is marinated in yogurt and spices, then cooked with partially cooked rice in layers. The biryani is then garnished with fried onions, mint leaves, and boiled eggs. The result is a biryani that is light, aromatic, and has a distinct taste due to the addition of potatoes.