1 lb fingerling potato, halved lengthwise |
1 tablespoon white wine vinegar |
1/4 cup finely chopped shallot |
1/4 cup chopped fresh flat-leaf parsley |
3 tablespoons fresh cream (cream fresche) |
1 teaspoon chopped fresh sage |
1/2 teaspoon kosher salt |
1/2 teaspoon fresh ground black pepper |
3 ounces very thin slices prosciutto, finely chopped |