Bread quickly and at low costs to the manufacturer and the consumer. However, there has been some criticism of the effect on nutritional value. Bread is the staple food of the Middle East, Central Asia, North Africa, Europe, and in European-derived cultures such as those in the Americas, Australia, and Southern Africa, in contrast to parts of South and East Asia where rice or noodle is the staple. Bread is usually made from a wheat-flour dough that is cultured with yeast, allowed to rise, and finally baked in an oven. The addition of yeast to the bread explains the air pockets
Sandwich bread be prepared using gluten-free flour, teff flour. and other ingredients. In the 1930s in the United States, the term sandwich loaf referred to sliced bread. In contemporary times, U.S. consumers sometimes refer to white bread such as Wonder Bread as sandwich bread and sandwich loaf. Wonder Bread produced and marketed a bread called Wonder Round sandwich bread, which was designed to be used with round-shaped cold cuts and other fillings such as eggs and hamburgers, but it was discontinued due to low consumer demand. American sandwich breads have historically included some fat derived from the use of milk or oil