Patat refers to Dutch fried potatoes, much like French fries but the Netherlands' version is often thicker and served with mayonnaise, or with mayonnaise and saté-sauce (Patatje Oorlog) or with mayonnaise, ketchup and raw onions. Patats is available from any snackbar or stall around the country. Patat Speciaal is a special kind of Patat which is served with ketchup and raw onions are called