Guys,
I just spoke to my local indian supermarketowner in Munich and he said he used to make the gravys (in a BIR) almost the same way as prescribed here in this thread.
He only said the he fried the onions until brown, then put in the garlic and the spices(1 turmeric, 1 coriander, 1 chili and maybe 1,5 or 2 cumin), fry a few minutes (almost dark brown) and THEN put in the water and let it cook for a few hours on a very low heat... the ginger he put in at a later stage.
Thank you very much for this recipe...
My girlfriend left the house a few days and I thought this is the right moment to try this recipe ;D Its already smelling great :

cheers
Jasper