1. Cut the hard-cooked eggs in half lengthwise. Remove the yolks. Set aside the egg white halves. 2. In a large bowl, use a fork to mash the egg yolks until the consistency of fine crumbs. Stir in the mayonaise, Worcestershire sauce, vinegar, mustard, salt, an d pepper. 3. Spoon or pipe the yolk mixture into the egg white mixture into the egg white halves. Sprinkle with the parsley. Cover and refrigerate for 1 to 6 hours. Makes 24 side-dish servings.