I watched this last night and thought it was pathetic - the sort of thing I would have cooked 25 years ago having discovered yet another make of madras sauce and thinking I might find the "secret" from a jar.
It's neither traditional Indian nor anything near BIR.
I also read his butter chicken curry recipe which has gone into print in one of his books.
The recipe states 230 ml of tomato paste. Sure enough a lot of people it seems squirted in this amount of double concentrate tom puree and found the result disgusting!
Apparently it is ok if you use pasata instead but the recipe should be clearer.
Sometimes I wonder if any of these celebrity chefs are any good.
Rant over.....
Paul.