A friend's mother used to serve a chocolate rum layer cake that was the best thing I ever put in my mouth. Mrs. G was Polish, which may or may not be a key here. As I recall, the cake was three layers high. It may have been four. Filled and iced. She kept it in the refrigerator and sliced it very thin. It was so rich, a skinny slice was plenty.
Mrs. G declined to give out the recipe because she'd once given it to a friend and when the friend's efforts resulted in a flop, she accused Mrs. G of sabotage. It was most upsetting to this lovely, honest, and kind lady.
Anyone have something in her or his repetoire that might come close? Thanks!