I don't like mayo in potato salad, preferring a southern German style like Grandma and Mom used to make. I like the vinegar and mustard flavor. If it's too much, some sugar can be added to tone it down.
3 pounds new potatoes
1/2 pound bacon, diced
1 large red onion, diced
3/4 cup cider vinegar
1 tablespoon Dijon mustard
Black Pepper
8 green onions, thinly sliced
1/4 cup chopped fresh parsley leaves
Boil the spuds. Cook down the bacon. Cook the onion in the bacon grease. Add the mustard and vinegar. Dump into mixing bowl. Add cooled spuds. Pepper, parsley and green onions. Serve warm or cold. Stolen from Food Network.