Yes, it was me that posted this
The info came from a man I worked with
He used help at a takeaway in the 90's, in Nottingham
They used to make a chicken jelly stock, which went in all curries, because it was in the gravy
They also used "thyme" in the base too (different but a bit similar to ajwain seeds, I guess)
Since posting this I have been in loads of takeaway/restaurant kitchens and I have never seen this done
It's old school
It used to be commonplace to boil a chicken carcass in the base too
Julian Voight even wrote up a recipe in one of his Secrets books
I shouldn't think it's done now though
People like Mick Crawford have pretty much shown everything that goes on
Julian and Adey Payne, Alex Wilkie too
And of course there is a wealth of info on this site
It can be overwhelming and most threads seems to wander
I don't think you can really achieve 100% at home
Close but somehow not quite right
Best thing is to follow one set of posts and recipes
The Fleet Five were good ones
Check them out on this site