Kolkata Biryani is a unique and flavorful variation of biryani that originated in the city of Kolkata in India. It is made with basmati rice, tender meat (usually chicken or mutton), and a blend of aromatic spices. Kolkata Biryani is known for its distinct flavor, which comes from the use of potatoes and a special spice blend called 'Biryani masala'. The meat and potatoes are cooked with partially cooked rice in layers, creating a delicious and fragrant dish. Kolkata Biryani is often garnished with fried onions, boiled eggs, and served with raita or a side salad. It is a popular dish in Kolkata and is loved by biryani enthusiasts.