Just been to my friendly takeaway tonight and talked to him at length about the base sauce.
He said start with vegie oil and fry garlic and ginger
Add chilli powder, curry powder, turmeric and salt. I said I use rajah curry powder and he said that would fine in the kind of way that meant basically any curry powder would be fine.
Add onions, carrots, green peppers, celery, fresh coriander and tomato paste, add water.
Simmer for an hour, then liquidise, then cook on high for 10 minutes and low for 5 minutes, job done. He leaves it overnight and said this added to the flavor.
He was adamant that it cant be done at home and seemed to indicate it was to do with quantities, he said the amounts of spice are very important.
He also said he cooks curry for his kids at home and they say, dont cook it at home, bring some from the take away kitchen!
He said the tomato he adds is definately called paste and he buys it in big cans
Just realised I posted this in the wrong section, Stu can you move it to base sauce area, cheers