"Using vinegar and mustard in addition to the usual mayonnaise is the secret to a perfectly balanced potato salad. To save time, chop the celery, scallions, and cornichons for the dressing while the spuds cool...."
INGREDIENTS
•
3 pounds russet potatoes (about 6 medium)
•
Kosher salt and freshly ground pepper
•
3 tablespoons distilled white vinegar, divided
•
3/4 cup mayonnaise
•
2 tablespoons whole-grain mustard
•
1 cup finely chopped celery (from 3 stalks)
•
1/2 cup sliced cornichons (from about 20)
•
1/3 cup finely chopped scallions (from 3)