Hi Flavourjunkie,
This post would be right up Jerry's street and once he picks up on it, I'm sure that he will offer you some very sound opinions, based on his extensive experimentation of all variables.
I get exactly where your coming from with regards to most dishes on the BIR menu almost having the same flavour.
Here's my theory, and I know not everyone will like this theory (SS)

Most run of the mill BIR curries are "formula" recipes, all using the same base, same spice mix and same precooked meat. This will inevitably produce the same familiar flavour throughout their range. For example:
Plain Chicken Curry;
1 tsp garlic/ginger paste
300ml base,
3 tbs veg oil,
1 tsp spice mix
1 portion of precooked meat.
Turn this into a Bhuna by adding an extra
1 tsp spice mix
1 chopped onion
1 chopped tomato
1 portion of precooked mixed peppers
and reduce the sauce until quite dry.
Turn this into a dupiaza by adding,
1 extra sliced fried onions
0.5 tsp chilli powder
pinch of sugar
1 tsp garlic/ginger paste
Don't reduce the sauce as much as you would for the bhuna.
Turn this into a Jal Frezi by adding extra;
1 tsp chilli powder
5 fresh green chilli's
1 tomato quartered
0.5 tsp of black pepper.
Ok, so these are not exact recipes but I'm using these stepped changes as examples of formula curries. Does that make any sense?
If you are using the same base and precooked meat in all your curries but you are changing your spice compositions to suit each curry style, then you are not really following the BIR style, albeit that your final dishes may be amazing. The trouble is, most of the BIR around the country, want to churn out dishes, with as little effort as possible, and make as much money as they can, hence the invention of formula curry dishes. Sad but true. Whereas what you are doing, is really defining each dish by giving it it's own masala, which is a far more complicated way of doing things, but will produce a very unique flavour to each of your dishes.
Just picking up on your comments with regards to the base, Axe and myself were discussing this a while back and I decided to knock up a batch of, onion, garlic, ginger and turmeric base, nothing else. The colour was vile, the smell wasn't great either. With that said, I cooked my standard madras with it, doubling the amount of spice mix that I usually use, adding slightly more tom puree than normal. What I ended up with, was a reasonably good quality madras, not quite as nice as my standard recipe but good nonetheless. Unfortunately, I didn't bother to continue with the experiment, as it had already answered the question, can a base consist of very few ingredients and still be a useable base? and the answer was a definite YES IT CAN.
It's a very good post FJ and deserves some interesting debate.
Ray
