All ingredients should be cold ... thicken. Then add oil, 1 tablespoon at a ... good as a dressing for macaroni or potato salad. We also like to ... batch of this dressing.
In a large saucepan of ... the horseradish, mustard, oil, sour cream, and salt ... and chill the dressing, covered, for at least ... beans in a salad bowl, spoon the dressing over ... the top. Serves 6.