INGREDIENTS
2
lbs Idaho russet potatoes
2 tbsp
Parsley, fresh leaves
1/2 tsp
Dijon mustard
1
Kosher salt
1
White or black pepper, Fresh ground
4 tbsp
Olive oil
2 tbsp
White wine vinegar
2 tbsp
White wine, dry
2 tbsp
Potato-cooking water
3 tablespoons finely minced scallions (white and green parts)