Potato salad is a dish made from potatoes, the versions of which vary throughout different regions and countries of the world. Although called a salad, it is generally considered a side dish, as it generally accompanies the main course. Potato salad is often served with barbecue, roasts, hot dogs, fried chicken, hamburgers and cold sandwiches. It is generally considered casual fare, and as such is typically served at picnics, outdoor barbecues, and other casual meals and events. Potato salad is a popular menu choice of cooks preparing food for a large number of people, because it is easily made in large quantities, it can be prepared in advance and refrigerated until needed, and requires inexpensive ingredients.