Kolkata Biryani, also known as Calcutta Biryani, is a unique variation of biryani that originated in the city of Kolkata, India. It is made with fragrant basmati rice, tender meat (usually chicken or mutton), and a blend of spices. What sets Kolkata Biryani apart is the addition of potatoes and boiled eggs, which add a unique flavor and texture to the dish. The meat is marinated in a mixture of yogurt, ginger-garlic paste, and spices, then cooked with partially cooked rice in layers. The dish is then sealed with dough and cooked on low heat, allowing the flavors to meld together. Kolkata Biryani is known for its subtle flavors and is often garnished with fried onions, mint leaves, and raisins.