My wife and I made this yesterday evening and like a previous poster thought it wasn't quite hot enough though we substituted 3 heaped teaspoons of 'extra hot' for 4 heaped teaspoons of 'hot' thinking it would suffice .. even my wife said she could bear a degree or two hotter ( good girl !! ).
That aside this was superb in flavour , consistency and depth of taste as far as I was concerned .. it really reminded me of a BIR circa 1990 - 2000. We did follow the recipe exactly apart from the chilli and we used CA's base and masala.
My only complaint ( my wife's actually ) was the mess ... this bad boy boiled and spat a good 0,5m radius even our greedy Bull Terrier who insists on sitting beneath us whilst cooking ( hoping for dropsies ) is sporting a dozen phall coloured spots !! ;D