Hi,
I have now made two batches of this sauce

the first i was unhappy with and threw away, i was in a rush and could only find Patak's Curry Paste, which just does not work, plus i only boiled the onions and green peppers for 40 mins, big mistake.
The second batch i made i boiled the onion and green pepper for 1.5 hours and i found the Patak's Balti Paste in Salisbury's and added this in along with the fried garlic, ginger and spice mix.
This made all the difference plus with the addition of some salt i am pretty happy with this as a curry sauce, there is a certain richness to it.
I will be trying the madras recipe shortly and provide feedback.? From all the learning to date it does appear that there is no 1 curry sauce

.
Stew