This is an interesting post. The only thing I can comment on is years ago we ate at "The Machine Shed" at the "Living History Farms" in Des Moines, IA I joked with the waitress wondering if they had recipes for the cole slaw and meat loaf. When left the chef came to meet us - recipes in hand for us reminding me that they were for 100 people. BUT he was quite adamant about the dressing. Buy 'salad dressing' not Miracle Whip. M. Whip he said is not salad dressing ! Up until that I had always used M Whip. Never again !