Slice chicken thigh, and marinate in the goan to bombay seasoning.
Dice onion and cook off in a large casserole dish, add the garlic, and tandoori paste and stir well. Add the spinach , and the chicken stock. Stir well, and simmer for around 5 minutes.
Add coconut cream
Blend well with a stick blender till very smooth sauce has formed.
Sear off the chicken in batches in the remainder of the ghee.
Add to the spinach sauce. Season well with salt of choice and stir.
Either simmer for 40 minutes on a medium heat till chicken is tender and sauce flavor well developed, or pop the whole casserole dish with a lid on, in the oven at 180 for 40 minutes.