Indian cooking
Indian cooking / Dishes / Kossha Mangsho
Kossha Mangsho (Lamb Curry (I))

Kossha Mangsho

Lamb Curry (I)
Non-vegetarian●●●Origin BengalPrep 30 minutes, plus marinating timeCook 1½–2 hours

A rich, slow-cooked Bengali-style lamb curry simmered in mustard oil and yogurt until the sauce is deeply savoury, thick, and clinging to tender meat.

Marinade spices

4.1 gWhisked into the marinade (step 1)
01
2.6 g1 teaspoon
spice
02
1.5 g½ teaspoon
spice
Stir together ready for marinating.

Ginger-garlic paste

47 gFried with the green chillies (step 3)
Mix the pastes together in a small bowl.

Sauce spices

8 gAdded to the pan with the yogurt and meat (step 4)
02
3 g1 teaspoon
spice
Combine the ground spices.

Finishing spice

5 gStirred into the curry at the end of simmering (step 6)
Keep ready to stir in just before serving.

Everything else

01
Boneless lamb · Muttoncut into 2.5-cm / 1-inch cubes
1000 g
meat
02
114 g125 ml
oil/fat
03
300 g
vegetable
04
7 g2 teaspoons
vegetable
05
517 g500 ml
dairy
06
13 g3 teaspoons
sweetener
07
to taste
salt
08
1 g3 teaspoons
herb
09
259 g250 ml
dairy
10
27 g2 tablespoons
oil/fat
11
4.2 g1 teaspoon
sweetener

Method

  1. In a wide bowl, combine 259 g yogurt, 27 g mustard oil, 4.2 g granulated sugar, and the marinade spices. Add 1000 g lamb, turning to coat every piece thoroughly, then cover and chill in the fridge for 1 hour.
  2. Warm 114 g mustard oil in a large kadhai or deep frying pan set over medium heat. Add 300 g sliced onion and cook, stirring frequently, for 5 to 7 minutes until richly browned.
  3. Add the ginger-garlic paste and 6.6 g chopped green chilli, frying for 2 to 3 minutes until the raw smell dissipates.
  4. Raise the heat to high. Tip in 517 g yogurt, 12.6 g granulated sugar, the sauce spices, the marinated meat along with all of its marinade, and salt to taste. Cook vigorously, stirring continuously, for 5 to 10 minutes.
  5. Pour in 1 litre of water. Bring to a gentle boil, then cover with a tight lid, reduce the heat to low, and simmer for 1 to 1½ hours until the meat is completely tender and the sauce has reduced to a thick coating.
  6. Fold in the finishing spice, taste to adjust the salt, and scatter 1 g chopped coriander leaf over the top.

Don't have something?

Boneless lamb
  • Boneless lamb shoulder

    Use same weight; shoulder is well marbled and best for slow curry, with similar cooking time.

  • Boneless leg of lamb

    Use same weight; leg is leaner, so simmer 10 minutes less to avoid dryness.

  • Boneless lamb fillet

    Use same weight but simmer 15–20 minutes less; fillet is tender and cooks quickly.

Mustard oil
  • Peanut oil

    Use equal weight. It handles high-heat cooking well, but lacks the signature pungent, nasal heat of mustard oil.

  • Vegetable oil

    Use equal weight. Neutral in flavour, so your curry will lack the characteristic Bengali or North Indian pungent punch.

Onion
  • Shallot

    Use equal weight, finely sliced. Shallots soften and brown faster, giving a slightly sweeter and more delicate base to curries.

  • Cabbage

    Use 80% of the weight, finely shredded and browned slowly with a pinch of asafoetida. Replicates the bulk and natural sweetness in gravies without allium.

Ginger paste
  • Fresh ginger

    Use equal weight; peel and grate very finely on a microplane or pound to a fine paste in a mortar.

  • Ginger

    Use equal weight; mince finely and crush with the flat of a knife before frying.

  • Ground ginger

    Use 20% of the weight; add directly with the dry spice powders, though it yields an earthier, less pungent profile.

Garlic paste
  • Garlic

    Use equal weight; crush or finely grate to a smooth pulp to replicate the same fresh, pungent moisture in your base gravy.

  • Garlic powder

    Use 20 to 25% of the weight; mix with a teaspoon of water before adding to oil so it does not burn, noting it lacks the fresh bite.

Green chilli
  • Chilli powder

    Use 10 to 15% of the weight (about 1/4 teaspoon per chilli); imparts dry pungent heat and reddens the dish without the grassy crunch.

  • Dried red chilli

    Use 1 dried pod per fresh green chilli; snap in half and temper in hot oil for a deeper, toastier heat.

Yogurt
  • Plain yogurt

    Use 100% of the weight. Whisk thoroughly until smooth before stirring into warm gravies to prevent curdling.

  • Single cream

    Use 90% of the weight combined with 10% lemon juice to replicate the lactic tang and rich body in marinades and curries.

Chilli powder
  • Red chilli powder

    Use 100% of the weight. Provides direct, sharp heat and red colour in equal measure.

  • Kashmiri chilli powder

    Use 150% to 200% of the weight if matching colour, but add a pinch of black pepper or hot chilli if you need equivalent fiery heat.

  • Cayenne pepper

    Use 75% to 100% of the weight. Offers a sharp, clean heat with slightly less earthy depth and less crimson colour.

Ground turmeric
  • Ground ginger

    Use 50% of the weight. Mimics turmeric's warm, earthy, rhizome background, but provides none of the golden-yellow colour.

  • Saffron

    Steep a tiny pinch (0.1 g per 2 g turmeric) in 2 tbsp warm water; use to match the rich golden hue. Contributes an aristocratic, honeyed floral flavour rather than earthy bitterness.

Granulated sugar
  • Jaggery

    Use equal weight; grate or shave finely so it dissolves rapidly, giving a warm, caramel-like sweetness and slightly darker sauce.

Ground black cardamom
  • Black cardamom seeds

    Use equal weight; grind freshly in a mortar or spice mill for an even more vibrant camphor-and-smoke aroma.

  • Black cardamom pod

    Use 2.5 times the weight in whole pods; crack open, extract the sticky seeds, and grind to a fine powder, discarding the husks.

  • Garam masala

    Use 60% of the weight; provides some warm resinous smokiness if it contains black cardamom, though it adds cinnamon and clove notes.

Coriander leaf
  • Coriander

    Use equal weight finely chopped; this is the exact same fresh herb.

  • Mint

    Use half the weight finely chopped; provides vibrant green freshness, though the flavour profile becomes noticeably cooler and sharper.

Similar dishes

Bhuna Keema
Roasted Minced (Ground) Lamb
Bhuna Keema tastes drier, sharper, and more herbaceous with pronounced heat from fresh chillies and lemon juice, lacking the rich, sweet, and smoky depth provided by the yogurt, sugar, and black cardamom in this dish.
  • Same: Bhuna Keema also uses lamb cooked with onions, ginger, garlic, ground turmeric, chilli powder, green chillies, and fresh coriander.
  • Different: Bhuna Keema dry-fries minced lamb in vegetable oil with lemon juice and mint, whereas this dish slow-cooks lamb in mustard oil with a large amount of yogurt, sugar, and ground black cardamom.
Bhuna Gosht (I)
Spicy Roast Lamb
Bhuna Gosht (I) tastes more purely savoury and unembellished, lacking the mustard pungency, smoky cardamom depth, and sweet, creamy tang of this dish.
  • Same: Bhuna Gosht (I) shares the slow-cooked method of reducing spiced onion, ginger, garlic, turmeric, and chilli powder until a thick coating clings tightly to the lamb.
  • Different: Bhuna Gosht (I) cooks with neutral vegetable oil instead of mustard oil and omits the yogurt, black cardamom, sugar, green chillies, and fresh coriander used in this dish.
Tala Gosht
Fried Lamb
Tala Gosht is drier, crisper, and purely savoury, lacking the pungent, tangy, and slightly sweet gravy of this dish.
  • Same: Both dishes feature lamb seasoned with ginger, garlic, chilli powder, and turmeric.
  • Different: Tala Gosht is pan-fried in vegetable oil without the onions, yogurt, sugar, green chillies, black cardamom, or mustard oil used in this slow-cooked curry.
Chippa Gosht
Lamb Cooked in a Clay Pot
Chippa Gosht has a brighter, citrusy tang, whereas this dish has a thicker, richer, and sweeter profile shaped by caramelized onions, yogurt, and pungent mustard oil.
  • Same: Both are slow-cooked lamb curries prepared with ginger paste, garlic paste, turmeric, and chilli powder.
  • Different: Chippa Gosht is cooked in an earthenware pot using neutral vegetable oil and finished with lemon juice, omitting this dish's yogurt, onions, mustard oil, sugar, and black cardamom.