Wow Pete that was absolutely fascinating, thanks for sharing!
Will you make the recipe again and cook the gravy for far longer, brown garlic etc, it would be interesting to see if that would give it 'the taste'. I would love to visit there if I lived nearer!
I know what you mean about Sunday curries lacking 'the' flavour. I sometimes go to our local sunday all you can eat buffet, and while the food is nice enough and fresh tasting, it's not like a usual takeaway, it's more a home-cooked taste and not really anything that I couldn't do myself. It's still a nice way to spend a couple of hours on a sunday though!