French fries are served hot, either soft or crispy, and generally eaten as part of lunch or dinner, or on their own as a snack, and they commonly appear on the menus of fast food restaurants. French fries are generally salted and are often served with ketchup; in many countries they are topped instead with other condiments or toppings, including vinegar, mayonnaise, or other local specialties. Fries can also be topped more elaborately, as in the dishes of poutine and chili cheese fries. Sometimes, fries are made with sweet potatoes instead of potatoes, are baked instead of fried, or are cut into unusual shapes. Fries made with ordinary potatoes are sometimes baked as well.