Much like using Greek yogurt in place of mayonnaise for tuna, chicken, potato, and other salads, crème fraîche provides a creamy and slightly tart alternative that's also egg free. With just the ingredients of cultured buttermilk and heavy cream, you can make your own or grab a store-bought version like Vermont Creamery Crème Fraîche. To make this swap, use about a 1:1 ratio or less, depending on your taste preferences.
When I ask my husband if he wants potato salad, he says, "Yes, the good one." That means everything's better with bacon to him... It's so true. I don't have amounts of the mayo, parsley or cayenne pepper because it adjusts to amount your making and your taste preferences.