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Bengali Kosha Mangsho – Dry Fry Lamb cooked with whole spices & chillies

Bengali Kosha Mangsho

An authentic Bengali meat dish and one of my favourites. In India it is cooked with mutton though I have swapped lamb for it; marinated in a yoghurt mix, tossed in spices and cooked until the meat is moist & tender. A note to remember is that there is no additional water added to this dish. The end result isn’t quite a gravy dish but one with a thick masala that coats all the chunks of lamb. For this dish this it is crucial that the onions are fried well until soft & caramelly also that the ginger & garlic paste is blended to a fine puree to yield that thick masala base.


800gms leg of lamb cut into 4cm pieces on the bone

2 tbsp Greek yoghurt

1 tbsp mustard oil (optional)

¼ tsp turmeric powder

Pinch of salt

3 cloves of garlic

1” piece of ginger

2 tbsp vegetable oil

4 green cardamom pods

4 cloves

½ “piece of cinnamon

2 dried mild kashmiri chillies

1 medium onion finely sliced

1 heaped tbsp tomato puree

2 tsp coriander powder

1 tsp cumin powder

1 tsp kashmiri chilli powder (or mild paprika)

1 medium potato cut into chunks

1 tbsp lemon juice

1 tbsp coriander leaves roughly chopped

Salt to taste

Bengali Kosha Mangsho (2)

Add the Greek yoghurt, mustard oil, turmeric powder and salt in a mixing bowl and whisk lightly. Add the lamb to it and marinate for 1 hour or preferably overnight. Blend together the garlic & ginger with a splash of water (2 tbsp) to a fine puree. Set aside.

In a heavy bottom sauce pan heat the vegetable oil and add the cardamom pods, cloves and cinnamon stick. Also add the dried chillies. Let them sizzle and infuse the oil for a minute. Add the sliced onions and fry on medium heat for 7-10 minutes. As they soften and start to change colour add the ginger garlic paste. Sauté the paste for a couple of minutes and turn the heat to low. Followed by the tomato puree frying for a further couple of minutes. At this stage add all the lamb pieces along with the marinade and stirring well, seal the pieces for 2-3 minutes. Add the powdered spices and stir well frying for 3-4 minutes. As the lamb cooks it starts to release its moisture. Now add the potato chunks. Season to taste. Bring to a boil and simmer cooking with the lid on for an hour on a low heat until the meat is moist & cooked all the way through. Make sure to check half way through the cooking process, stir the lamb adding a splash of water if it gets too dry.

Add lemon juice, salt and garnish with fresh coriander. Serve warm with luchis or puris.

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One Comment

  1. Steph Webb
    Posted January 5, 2015 at 6:50 pm | Permalink

    I loved this! Delicious sauce!!! However, I forgot to cook the lamb so the aftermath was not all that great. I thought it tasted a bit cold…

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