Kostritzer's advertising 'Das Schwarze mit der blonden Seele' is still one of the smartest slogan I've ever heard... Awesome trait for both a great woman or a great beer!
But, in my opinion, what Kostritzer does even better (which, I realize, is a sizeable statement) is their Edel Pils... Absolutely mindblowing!
They don't distribute the pils widely, I think partially because since Bitburger bought out Kostritzer, they probably don't want to create competition among their own brands. Anyways, it is maybe hard to get one, but absolutely worth the effort, must try!