Cook

1. Put the star anise, coriander, cloves, peppercorns, cumin, cardamom, fennel and cinnamon stick into a spice grinder, food processor or pestle and mortar to grind them, and then set the spice mix to one side.

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2. Rinse your basmati rice in at least three changes of water to wash out the starch and leave to soak in a bowl of cold water on one side for 30 mins. Next, chop your onions in half, peel them and then slice into fine rings. Pop the ginger and garlic into a food processor, or finely grate the ginger and crush the garlic.

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3. Put a tablespoon of oil into a large, heavy-bottomed, lidded frying pan on a high heat. When you are sure that the pan is very hot, sear the lamb in batches (so that you don’t crowd the pan), turning them until they are golden brown. Take the meat out with a slotted spoon and set aside.

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4. Add another 2 tablespoons of oil to the same pan and fry the onions for 8 to 10 minutes, until they are soft and golden. Take out half of the onions, transfer them to a bowl and set to one side. Then put the garlic and ginger into the pan. Stir-fry for a couple of minutes and add the spices that you have ground, together with the turmeric and chilli powder. Keep stirring to ensure these don’t burn at the bottom of the pan.

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5. After a minute or so, add the lamb, yoghurt and tomato tin blitzed, stir well to ensure it is all mixed together, and add 400ml of warm water. Bring to the boil, then turn the heat down to low, pop the lid on and leave to simmer for around 1½ hours, or until lamb is tender.

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6. Preheat the oven to 180°C/350°F/gas 4.

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7. Meanwhile, you’ll need to cook the rice and prepare the fried onions for layering. Drain the rice and transfer to a saucepan. Boil a large pan of water add the rice so that there is 4 times as much water as the rice, and bring to the boil. Boil for 8 minutes, until it’s just cooked but still has a bite. Drain and set aside.

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8. Transfer the onions from the bowl to a small frying pan and continue to fry for another 10 minutes, or until the onions are caramelized, then take off the heat. Check on the lamb: as soon as it is falling apart, season with salt to taste and take off the heat. Seal the pot with a tight lid or foil.

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9. Take an ovenproof pot which will snugly accommodate the rice and lamb, such as a casserole dish. Remove half of the meat from the lamb curry using a slotted spoon (to leave the sauce behind) and place it at the bottom of the pot. Top the meat with half of the rice and half of the onions and repeat with the rest of the meat, rice and onions. Keep the sauce of the curry aside to serve with the biryani. Bake the biryani for 20 mins.

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10. Sprinkle the rice with the rose water, saffron, Toasted cashews and sliced pistachio.

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