Fries, often referred to as French fries, are a popular SIDE dish or SIDE order. They are usually made from potatoes that have been cut into thin strips and deep-fried. Fries are typically served hot and salted, and are often accompanied by condiments such as ketchup, mayonnaise, or vinegar. Fries are a common accompaniment to hamburgers, sandwiches, and other fast food items. They are also a popular snack food, and can be found in many restaurants and cafeterias.