Kosha Mangsho is a traditional Bengali dish made with tender mutton pieces cooked in a rich and flavorful gravy. The dish is known for its slow cooking process, which allows the meat to absorb the spices and develop a deep, caramelized flavor. The combination of aromatic spices like cinnamon, cardamom, and cloves, along with the tanginess of tomatoes and yogurt, creates a delicious and hearty dish that is perfect to be enjoyed with steamed rice or roti.