I need some help with potato salad for my dad's 70th birthday party. He's serving burgers, and I want to bring a side that goes well with them. I don't make potato salad often, so I'm hoping to find a favorite recipe or a special twist that really makes it pop. Also, any tips on keeping mayo-based salads cold at an outdoor party would be great. I'm overthinking this and might just end up grabbing some from the store if I can't figure it out.