Yesterday I decided to try some of the ideas from Dave Loyden's base recipe, and in view of the discussions in this thread, added one teaspoon hing [1] and one teaspoon fenugreek to a green base consisting of pureed leeks cooked in rabbit stock(it was meant to be chicken stock, but my wife didn't bother to tell me she had already frozen the freshly made chicken stock and made room for it in the freezer by taking out some rabbit stock !). Anyhow, apart from those two ingredients I made the sauce in my normal KD-ish way, and then this evening cooked a chicken madras using yesterday's base. I omitted the fenugreek as this was already in the base, and -- to be honest -- the end results were not markedly different from any other madras I have ever made. Very pleasant, good texture and flavour, but you wouldn't drive ten miles to eat it if you had a perfectly good BIR in your own village !
** Phil.
[1] Yes, really a teaspoon, not a desert or tablespoon. These days I make just enough base for a couple of curries, so all ingredients are scaled down accordingly. To give an idea of the scale of the operation, there were just two leeks in the green stage-1 sauce.