This classic spinach salad is made with the traditional bacon dressing. The warm dressing is made with bacon drippings, vinegar, and sugar. The heat of the dressing wilts the spinach leaves and gives the spinach salad a wonderfully delicate sweet and sour flavor. The salad is garnished with sliced hard-cooked eggs and crumbled bacon. It gets some extra crunch from the red onion and radishes. It's a simple salad with a big flavor. See the variations for some add-in suggestions and ideas. Make this salad as a lunch dish or take it along to a potluck or tailgating event.