Kleina (plural kleinur) is an Icelandic fried pastry that has been popular domestically for at least two centuries. It is made from flattened dough cut into small trapezoids with a special cutting wheel called a kleinujárn. (A pizza cutter can also be used.) A slit is cut in the middle and then one end pulled through the slit to form a "knot". The kleina is then deep-fried in oil (traditionally tallow).