HELP: Ingredients to make an Indian curry in Berlin??

So whats the deal? There seems to be nowhere selling anything at all, even in the larger supermarkets - I know there aren't many Indian immigrants here but that shit is yummy! (Aren't the Germans aware of this?) I'm looking for anything, spices, madras paste (would be amazing) Even if I must some ready made sauces, HELP! Will be greatly appreciated!!