Step 1

To make the marinade, blend the garlic, ginger and a splash of water to a smooth paste in a food processor or blender. Put in a large bowl with the remaining marinade ingredients, except the chicken, and mix to combine. Add the chicken to the bowl and mix well. Leave to marinate for 1 hour, or overnight preferably.

Step 2

To make the bhuna, blend the tomatoes and tomato purée to a smooth paste in a food processor or blender, then set aside. Heat the oil in a non-stick kadhai or large lidded frying pan over a medium heat. Add the chillies, fry for a few seconds then add the onions. Stir well and fry gently for 25 minutes, until browned and softened. Keep stirring often to make sure they cook evenly.

Step 3

Add the blended tomato paste, stir and fry for 5 minutes. Add the marinated chicken and cook for 6 minutes, stirring so the chicken is well coated in the masala. Season with salt, lower the heat and continue cooking with a lid on for 8 minutes until the chicken is cooked through, stirring halfway through. Add the fennel, pepper and garam masala and stir. Garnish with coriander and cook for a couple of minutes. Serve immediately.