Lefse () is a traditional soft Norwegian flatbread. It is made with flour, can include riced potatoes, and includes butter, and milk, cream, or lard. It is cooked on a large, flat griddle. Special tools are used to prepare lefse, including a potato ricer, long wooden turning sticks and special rolling pins with deep grooves. Flavoring There are many ways of flavoring lefse. The most common is adding butter and sugar to the lefse and rolling it up. In Norway, this is known as . Other options include adding cinnamon, or spreading jelly, lingonberries, or gomme on it. Scandinavian-American variations include rolling it with a thin layer of peanut butter and sugar, with butter and white or brown sugar, with butter and corn syrup, or with butter and salt, or with ham and eggs. Also eaten with beef and other savory items like ribberull and mustard, it is comparable to a tortilla. Lefse is a traditional accompaniment to lutefisk, and the fish is often rolled up in the lefse. Variations There are significant regional variations in Norway in the way lefse is made and eaten, but it generally resembles a flatbread, although in many parts of Norway, especially Valdres, it is far thinner. ('thin lefse') is a variation made in central Norway. is rolled up with butter, sugar, and cinnamon (or with butter and brown sugar). or is thicker and often served with coffee as a cake. ('potato lefse') is similar to and used like , but made with potatoes. or is the smaller version of the potato lefse, and usually made with only boiled potatoes, flour and salt. It is often used in place of a hot dog bun and can be used to roll up sausages. This is also known as in Norway. Norway's Constitution Day on May 17 is one of the most popular days to eat the dish. Toppings include ketchup and mustard, but can also include raw onions, bostongurka, and other types of relish. is a variation common to Salten district in Nordland in Northern Norway. is eaten with a sweetened sauce made of brunost, a type of cheese, flour, and sugar. It is ready when is warm and the butter is melted. is a chunky small lefse. Made of butter, syrup, sugar, eggs, and flour. Originally created in western Norway as a treat for fishermen who worked at the Lofoten Fishery. is made on