To make a keto-friendly potato salad, swap out the potatoes for cauliflower, which drastically lowers the carb content while maintaining a similar texture and flavor profile. Boil or steam the cauliflower until tender, then mix with ingredients like mayonnaise, mustard, hard-boiled eggs, diced celery, and fresh herbs. This substitution satisfies the craving for traditional potato salad without breaking your carb limit.