Prepare the marinade by adding all the marinade ingredients together
Open up the boneless lamb and score the meat on both sides
Add 1 cup of the marinade, papaya paste, mint, coriander leaves, chilli, salt and pepper
Mix this into the lamb on both sides
Set the pot to saute mode and add the oil
Add the diced onion and allow it to caramelize
Add the lamb and sear on both sides
Remove the lamb and in the same oil, add the potatoes and toss in the marinade and oil
Add the water and bring to the boil and then remove the potatoes and the gravy and keep aside
Add the air fryer plate and set it to air crisp mode for 20 mins
Add the lamb in and turn at the halfway point
After 20 mins, add the potatoes and set the air fryer for another 10 mins
Remove and allow to rest
Remove the air fry plate and reserve any gravy and drippings
Turn it back onto sear and saute mode
Add the oil and mustard oil and the diced onions and chillies
Add all the remaining marinade and any of the reserved leftover gravy, cover and bring to the boil
Serve the gravy with the lamb and potatoes