My mother in law used to live in Ridgefield Park, NJ. There was a German deli nearby (I wish I remembered the name) but they had something called Green Potato Salad. It appeared to be only potatoes, lots of chopped parsley and a white vinegar-based dressing. I've tried to create the recipe but haven't had success. I know there has to be some "unseen" ingredients because it was just so delicious! Can anyone in the CH community help me?