Boil the potatoes until tender. When cool enough to handle, peel the potatoes. Meanwhile, in a large bowl blend mayonnaise, Miracle Whip, milk and mustard until smooth. This dressing should be fairly thin, so don’t skimp on the milk! Add salt and pepper to taste. Cut the warm potatoes into cubes and add to the dressing, folding carefully. Add green onions and radishes and blend well. The hard cooked eggs are layered on top for a pretty presentation. Chill well to let flavors blend. Serves 10