Step 1: Prepare the Marinade : In a large bowl, add yogurt, cream, cream cheese, and ginger-garlic paste. Mix in green chilies, lemon juice, white pepper, garam masala, cumin powder, cornflour, and salt. Whisk well until smooth and creamy. Add the chicken pieces and coat them thoroughly with the marinade. Drizzle a bit of oil or melted butter, cover, and refrigerate for at least 1–2 hours (overnight gives best flavor).