Today we have a classic cold side dish that you can serve almost any time, anywhere…
In a large bowl combine the macaroni, celery, onion, and parsley. In a small bowl, whisk together the mayonnaise, mustard, sugar, vinegar, sour cream and salt. Pour the dressing over the salad and stir to combine. Season with salt and pepper to taste. Serve. Store covered in the refrigerator, for up to 3 days.