Kosha Mangsho

Marinate the mutton: mix the meat with yogurt, half the ginger paste, half the garlic paste, turmeric, red chilli powder, and salt. Marinate for at least 2 hours, preferably overnight in the refrigerator.

Heat mustard oil in a heavy-bottomed kadai or pressure cooker over high heat until it smokes, then reduce to medium. This removes the raw pungency of mustard oil.

Add sugar and let it caramelize to a deep amber color — this is the Bengali technique of adding sweetness and color to the base.

Add bay leaves, cinnamon, cardamom, and cloves. Sauté for 30 seconds.

Add sliced onions and fry on medium-high heat for 15–18 minutes, stirring frequently, until they are deep golden brown and almost crispy. This step is crucial — do not rush it.

Add the remaining ginger and garlic paste. Cook for 2–3 minutes until the raw smell disappears.

Add coriander powder and cumin powder. Stir and cook for 2 minutes.

Add the marinated mutton and increase heat to high. Bhuno (stir-fry) the meat vigorously for 10–12 minutes, stirring constantly, until the meat is well-seared and the masala coats every piece. The oil should separate from the masala.

Reduce heat to low, cover tightly, and cook on the lowest flame for 30–35 minutes, stirring every 8–10 minutes. The meat should cook in its own juices — do not add water unless absolutely necessary.

Once the meat is tender and the gravy is thick and dark, add Bengali garam masala and a drizzle of ghee. Stir gently.

Cook uncovered for 3–4 more minutes until the gravy is dry and clinging to the meat.

Serve hot with luchi (deep-fried flatbread) or steamed rice.