Bring a large pot of salted water up to a boil. Add the potatoes and cook for 15 min. Drain and allow to cool until you can handle them. Cut into thirds and place into a bowl. While still warm add the white wine and toss gently. The potatoes will soak up the wine.

Meanwhile, mix the vinegar, oil, mustard, salt and pepper in a jar and shake vigorously. Pour the dressing over the potatoes, add the herbs and scallions and toss. Add more salt and pepper if desired. Serve warm or at room temperature. Can be refrigerated and brought back up to room temperature before serving.