Mix ginger, papaya, oil and coriander in a liquidiser, then mix in the chillies and yoghurt. Remove fat/meat from top 2 inches of chop and flatten out meat, removing any extra fat. Coat the chops with the marinade and refrigerate in sealed bag for at least 4 hours.
Sear on high heat, then grill for around 10 mins on medium heat and then a further 5 minutes on low. Keep turning to prevent burning and baste with melted butter. Season with salt & pepper and leave to rest for a few minutes before serving.
Season with salt & pepper and leave to rest for a few minutes before serving.