The roots of the wafer of Flanders date back to the Franks, who cooked them on the fire between two hot irons. The idea of drawing a grid on one side of the iron gave the name of waffle, a frank word meaning "honeycomb". The first filled waffles appeared during the 19th century. Originally, they contained a mixture of butter and honey, then butter and brown sugar. During this time, Flanders was divided into three parts (Holland, Belgium, France). Each region has created its own specialty: with or without yeast, Brussels waffle, Liège, etc. The filled waffle has become a specialty of the north of France and Belgium.