This classic potato salad with Dijon mustard mayonnaise is a crowd-pleasing side dish that is perfect for picnics, barbecues, or any casual gathering. The potatoes are boiled until tender and then tossed with a creamy dressing made with mayonnaise, Dijon mustard, vinegar, and herbs. The result is a tangy and flavorful salad that pairs well with grilled meats or sandwiches. Serve it chilled for a refreshing and satisfying side dish.