Sold at least between the 1940s and the 1960s (and probably longer and earlier), Kraft Miracle French dressing was, despite its name, a vinaigrette.
From a box sold in Louisville, Kentucky.
Hot Potato Salad
In skillet, simmer 2 Tbsp. sliced green onion in 3/4 c. Miracle French for 5 minutes. Add 1 qt. sliced cooked potatoes, 4 slices crisp bacon, crumbled, 1 tsp. salt, dash of pepper.
Mix, heat, stirring often. Serve hot.
Golden Potato Salad
Blend 1/4 c. Kraft Salad Style Mustard and 1 c. Kraft Mayonnaise. Add to 2 qts. diced cooked potatoes, 1-1/2 c. chopped celery, 2 Tbsps. chopped pimento, 4 chopped hard cooked eggs, 2 tsps. salt, dash pepper. [something?]