Goat Cheese Souffles in Phyllo Cups with Frisée Salad

Name: Goat Cheese Souffles in Phyllo Cups with Frisée Salad
Ingredients: 1 1/2 tablespoons cider vinegar; 1/2 stick (1/4 cup) unsalted butter, melted; 1/4 teaspoon salt; 2 large eggs, separated; 2 tablespoons all purpose flour; 2 teaspoons Dijon mustard; 3 tablespoons chopped fresh chives; 3/4 cup whole milk; 5 oz soft mild goat cheese, crumbled (2/3 cup); 5 tablespoons extra virgin olive oil; 6 (17 by 12 inch) phyllo sheets, thawed if frozen; 6 radishes, cut into very thin wedges; finely grated Parmigiano Reggiano (1/2 cup)