Potato bread is a form of bread in which potato replaces a portion of the regular wheat flour. It is cooked in a variety of ways, including baking it on a hot griddle or pan, or in an oven. It may be leavened or unleavened, and may have a variety of other ingredients baked into it. The ratio of potato to wheat flour varies significantly from recipe to recipe, with some recipes having a majority of potato, and others having a majority of wheat flour. Some recipes call for mashed potatoes, with others calling for dehydrated potato flakes. It is available as a commercial product in many countries, with similar variations in ingredients, cooking method, and other variables.