Spring Greens with Sherry Vinaigrette

Name: Spring Greens with Sherry Vinaigrette
Yield: 8 Servings
Ingredients: 1/4 cup Sherry wine vinegar; 2 teaspoons Dijon mustard; 2 teaspoons brown sugar; 2 tablespoons extra-virgin olive oil; 2 tablespoons bacon drippings reserved from Bacon-Wrapped Baked Eggs with Polenta; 4 cups mâche (about 2 ounces); 4 cups arugula (about 2 ounces); 1/2 cup thinly sliced green onions