CK,
i was only expecting 2 pics and felt duped until the 3rd pic appeared on the scroll. wow - looks my kind of madras for sure.
i've just put passata in as u suggested - well pleased with the result (used 1 chef spoon initially ie 4 tbsp and then tried 2 chef spoon - i think the 1 chef spoon is enough). many thanks.
i'm also interested in the dupiaza as i've had it in restaurant and liked it despite i believing it's being based on bhuna. the mixture of soft and more crunchy onion was what sold it.