bhuna - A type of curry, in which the spices are cooked in oil with no water.
Interestingly enough, I've been to a restaurant here in the states that, while now far away, served a bhuna that sounds just like that. It was a delicious dish, and at the time I set out to replicate it as best as I could. It seems that it might be a bit closer to an authentic/traditional dish than many restaurants make today. I can't say that it even had base, or if it did, there was very, very little.
This recipe was where I started, and if I recall it didn't require much tweaking. (The restaurant dish did have some bell pepper in it, for one). For some reason there are funny symbols that show up in the ingredients at least in my browser - but they represent 1/2 (so the ground coriander is 1.5 tsp, for example). Also, I pre-cooked the chicken, so omitted the water and did a proper oil-based fry with the spices. It resulted in a thick, oily sauce with a unique flavor all its own.
www.rubymurray.com/curry/displayrecipe.php?Name=Chicken+BhunaCould totallly be off from what the BIR dishes used to be, but thought it to be worth mentioning, since it definitely differs a lot from what is being offered today!