I made this tonight, using JonG's suggestion of skinless Drumsticks, I made it with 9 although I think I would make it with less next time so that I can 'get at' the gravy during reduction as my pan was full (probably more my lack of skill than measurements).
I think I was expecting a 'curry' with meat on the bone and a 'dry' sauce (I have had this served in a clay pot in restaurants before) but it is really a good side dish, to go with bhaji's, samosa and kebabs (seekh and shami) and some salad, sort of BIR Mixed Grill if you like.
Tasting all the way through, it was not until the little lemon juice and Coriander was added that I was impressed. I will make this again.
T63... could you suggest if this could be made into a more 'liquid' curry, meat falling off the bone, as I mentioned above? Maybe with the addition at different stages of some butter, sliced tomato, etc.. not the same dish but as a base for the curry? Just a thought.