I'm looking for some help with potato salad for my dad's 70th birthday. He's serving burgers, and I want a side that goes well with them. I don't make potato salad often, so I'm a bit stuck. Does anyone have a favorite recipe or a special twist that really makes it pop? Also, any advice on keeping mayo-based salads cold for outdoor parties would be great. Trying to avoid the store-bought stuff if possible.