Kolkata Biryani is a unique variation of biryani that originated in the city of Kolkata, India. It is known for its subtle flavors and the use of potatoes and boiled eggs along with meat (usually chicken or mutton). The meat is marinated in a blend of spices and yogurt, and then cooked with partially cooked basmati rice. The biryani is then layered with fried onions, potatoes, and boiled eggs, and cooked on low heat to allow the flavors to develop. The Kolkata Biryani is a delightful combination of flavors and textures.