Sorry; ‘Why’ is that done?
-JT
Must be because there’s not a lot of prepared mustard in the dish. Cooking the potatoes in vinegar will add a different tangy flavor.
(this recipe is somewhat similar to New Orleans style potato salad except they will add the vinegar into the dressing)
Btw, we had pulled pork sandwiches last night with french fries and RC Colas! D-e-l-i-c-i-o-u-s-!