Frisee Salad with Warm Bacon Vinaigrette

I grew up eating this dish often, with a few subtle differences: Careful not to cook the bacon til it's crispy -- chewy is what we were looking for. We sauteed the frisee or chicory in the bacon fat to wilt it. We called it wilted salad. And finally, only used malt vinegar for the dressing. My mother was first generation American, her mother was eastern european and lived in Paris before coming to the US.