My mom used to make it - I think it's German. You fry up bacon, chop it into bits, and save the grease. Meanwhile, you boil potatoes, cut them up while still warm, add the bacon, chopped scallions, and some chopped endive (not the Belgian kind, the other kind). Pour the bacon grease and some cider vinegar over it, toss (the grease and vinegar become a kind of bastard vinaigrette), and serve while still warm. We used to put sour cream on it as a garnish/because Slavic. ( My dad's side is Polish; sour cream was pretty much a food group at my grandma's.)