I've gradually been reading over all of Andy2295's posts and darting off on interesting tangents. It makes for interesting reading and I'm learning from it.
This link,
http://www.curry-recipes.co.uk/curry/index.php?topic=1556.0 shows that his posted spice mix also
did not contain a "curry powder" but was instead made up mainly of whole spices, roasted and ground fresh along with a few powdered ones. He also used a different mix, that did contain both curry powder and garam masala, specifically for his base gravy recipe, as clarified in answer to CA's question (page 2).
He was quite emphatic about the high turnover of in situ produced spice mixes from whole spices, and placed great importance on freshness. He claimed to have absolutely no commercial pastes of any type in stock. Wherever he did make any reference to commercial powders he (or his chef if there was one) insisted on TRS and Raj (Rajah perhaps? I'm not sure and it's irrelevant to me anyway).
There are some similar ingredients to the formula in the OP (naturally) but that is the end of any similarity. Andy2295's formula contains several extra spices and the quantities and ratios of the common ones are vastly different between the two. Does anybody recall trying Andy2295's spice mix and if so, how it was as opposed to the now widely accepted Mix[ed] Powders?
PS. (Off topic).
Interesting to note that his Aromatic salt is in fact a very short ingredient list compared to some others. The use of Allspice (even in minimal quantity) is not a common spice for BIR apparently but I did find it is used in The Bombay Bottle Masala (Allspice - Kababchini / kabab chini / cubeb / tailed pepper).
I found his statement on there being
no secret very interesting. He maintained it was all down to patience, perseverance, ingredient freshness and technique. He was also very clear in his claim that there was no single BIR taste, but that it was subjective and a very localized regional thing. Anybody's perception as to what they were after in seeking "The BIR taste" was largely influenced by what they had already experienced. From what I've read on this forum over the years I'd have to agree that there is quite a bit of merit in this claim.