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1
Marinate the Chicken
30 Mins
Fridge, 4°C (39°F)
Mix the yogurt, half the lemon juice, half the grated ginger and garlic, 1 tsp garam masala, 1 tsp Kashmiri chilli powder, turmeric and 1 tsp salt in a bowl. Add the chicken chunks and turn them until every piece is coated. Cover and rest for 30 minutes in the fridge.
Coat every piece — bare spots will not brown or taste of anything.
Done when: Chicken is evenly coated and the marinade has clung to the surface.
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2
Sear the Chicken
10 Mins
High heat, 220°C (425°F) grill pan or broiler
Heat the oil in a heavy grill pan or under the broiler until very hot. Shake the excess marinade off the chicken and sear the pieces in a single layer, 3–4 minutes per side, until charred at the edges. Work in two batches so the pan stays hot. Set aside — the chicken finishes cooking in the sauce.
Do not crowd the pan: crowded chicken steams instead of charring, and the smoky edges are half the flavour.
Done when: Charred at the edges and cooked through to 74°C (165°F) at the thickest part.
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3
Build the Makhani Sauce
15 Mins
Medium heat, 160°C (320°F), then a gentle simmer at 95°C (203°F)
Melt 40g butter in a wide pan over medium heat. Cook the onion 5 minutes until soft and golden, then add the remaining ginger and garlic and cook 1 minute. Stir in the remaining garam masala and Kashmiri chilli powder, the cumin and the tomato paste and fry 1 minute until the oil separates at the edges. Pour in the crushed tomatoes and the soaked cashews, season with 1/2 tsp salt, and simmer gently for 10 minutes.
Frying the spices in butter before the tomatoes go in is what wakes them up — raw spice powder in liquid tastes flat.
Done when: The sauce has darkened a shade, the oil glistens at the edges, and the onion has melted into the tomatoes.
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4
Blend the Sauce Silky-Smooth
5 Mins
Off the heat; sauce cooled 5 minutes to about 60°C (140°F)
Take the pan off the heat and let the sauce cool for 5 minutes, then blend it completely smooth with a stick blender or in a jug blender in batches. Push it through a fine sieve back into the pan for a truly velvety finish — this is the step that makes restaurant butter chicken feel luxurious.
Never blend boiling sauce in a sealed jug blender: the steam builds pressure and can blow the lid off. Cool it first and hold the lid down with a folded cloth.
Done when: The sauce coats the back of a spoon and has no visible flecks of onion or cashew.
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5
Finish with Cream, Butter & Fenugreek
10 Mins
Gentle simmer, 90°C (194°F); chicken to 74°C (165°F)
Return the sauce to a gentle simmer and stir in 90ml cream, the remaining 20g butter, the sugar and the remaining lemon juice. Crush the dried fenugreek leaves between your palms over the pan. Slide the seared chicken in with any juices and the slit green chilli, and simmer 5 minutes so the chicken soaks up the sauce. Taste and adjust salt and lemon. Serve with the remaining cream swirled on top and a scatter of cilantro.
Keep the heat low once the cream is in — a hard boil can split it. If the sauce feels too thick, loosen it with a splash of hot water.
Done when: The sauce is glossy and coats the chicken; the chicken is tender and reaches 74°C (165°F) through.
auto_awesome Finishing Touches & Plating
Rest the pan off the heat for 2 minutes, then swirl the remaining 30ml cream over the top, scatter with cilantro, and serve straight away with hot butter naan or basmati rice so the sauce is still glossy.