The Double Marination
In a large bowl, toss the chicken with lemon juice and salt; let sit for 10 minutes. Stir in the Greek yogurt, ginger-garlic paste, and marination spices. Cover and refrigerate for at least 4 hours (ideally overnight) to ensure maximum tenderness.The Tandoori Char
Heat a cast-iron skillet or grill pan over high heat with a tablespoon of oil. Sear the chicken in batches until charred spots appear on the outside. Note: The chicken doesn't need to be cooked through yet; the char is for smoky flavor. Set aside. Building the Base
In a heavy pot, bloom the cinnamon and cardamom in a little butter. Add the tomato puree and soaked cashews. Simmer on medium-low for 15–20 minutes until the oil starts to separate from the sides and the raw tomato smell is gone.The Sieve Technique
Transfer the tomato base to a high-speed blender and process until smooth. Crucial: Pour the mixture through a fine-mesh sieve back into the pot. Use a ladle to push it through, discarding any solids. This creates the "Silky" texture.Simmer and Emulsify
Add the charred chicken to the strained sauce. Simmer on low for 8–10 minutes until the chicken is cooked through. Reduce heat to the lowest setting and whisk in the cold, cubed butter and heavy cream until the sauce is glossy and vibrant.The Finishing Flourish
Crush the Kasoori Methi between your palms and stir it in along with the honey and garam masala. For the optional "Dhungar" method, place a hot charcoal in a bowl inside the pot, drizzle with ghee, and cover for 2 minutes before serving.