A simple recipe for Southern deviled eggs has a secret ingredient: a little sweetened condensed milk to give the filling a smooth and glossy texture. Top with a sprinkle of paprika and a couple of black olive slices for an easy appetizer. Slice the eggs in half lengthwise, removing yolks to a medium bowl, and placing the whites on a serving platter. Mash the yolks into a fine crumble using a fork. Add mayonnaise, vinegar, mustard ...