Lucinda Scala Quinn whips up potato salad with sour cream and scallions.
In a large pot, cover potatoes with salted water. Bring to a boil; reduce heat. Simmer until potatoes are tender when pierced with the tip of a sharp paring knife, 12 to 15 minutes. Drain well.
Meanwhile, in a large bowl, whisk together sour cream and mayonnaise; add warm potatoes, and gently fold to combine. Season with salt and pepper. Cover; refrigerate at least 1 hour and up to 1 day.
To serve, season salad again with salt and pepper, if needed; fold in scallions. Garnish with bacon and more scallions, if desired.