Bread is a staple food prepared from a dough of flour and water, usually by baking. Throughout recorded history and around the world, it has been an important part of many cultures' diet. Bread is prepared by baking a dough made of flour (ground grain) and water, and often other ingredients. It may be leavened or unleavened. Salt, fat and a leavening agent such as yeast are common ingredients, though breads may contain a range of other ingredients. The term "bread" is generally assumed to mean a bread made with yeast. Other times it refers to quickbreads (raised with something other than yeast, commonly baking powder) and flatbreads (not raised at all). There are many types of bread. Each type of bread has its own history, style, and of course taste. The more you experiment with different types of bread, the better you will be at creating new and interesting recipes.