Thank for your kind words, Jerry. But when you wrote "an impoverished BIR version", did you by any chance intend to type "improvised" rather than "impoverished" ? I rather hope that you did !
Incidentally, I now realise that when I described the recipe, I forgot to clarify that I use what most have called "spiced oil" and I call "recycled oil" (because I don't make it specially; it is just the skimmings from the most recent curry) at every stage in the proceedings, including the pre-cooking of the chicken.