Please make sure you have a working AED (automated external defibrillator) present before attempting to serve this recipe. Just sayin'.
You will notice this recipe does not call for mayonnaise. Mayonnaise is a cheap, quick and dirty shortcut, not to mention it changes the way German potato salad is supposed to taste and how it is served. Mayo-based salads must be kept cold or the mayo will turn. Real German recipes are served warm, and the action of combining the ingredients in the correct order creates its own natural mayonnaise, right in the bowl, that won't go bad when it gets warm - er, cold - er, whatever.
This recipe in not low-calorie. It's not supposed to be. It's supposed to be good, filling and the kind of food you have to eat when you're burning off 5,000 calories a day working the farm. We don't generally work the farm anymore, but the women in the Garstang family that ate this kind of food have lived to 95, 98, 103 and 94. One turned 75 this year and can still outrun you. So there.