INGREDIENTS
1/4 cup
Italian parsley, fresh leaves
1/3 cup
Shallot
1/4 cup
Tarragon or dill, fresh leaves
1 tbsp
Dijon mustard
1/4 tsp
Black pepper, freshly ground
2 1/2 tsp
Kosher salt
3 tbsp
Champagne vinegar
1/3 cup
Olive oil
2 1/2 pounds golf-ball-sized white or red new potatoes, scrubbed