Biscuit (bread) cooking, most often based on ground wheat and warmed with gravy. The biscuit emerged as a distinct food type in the early 19th century, before the American Civil War. Cooks created a cheaply produced addition for their meals that required no yeast, which was expensive and difficult to store. With no leavening agents except the bitter-tasting pearlash available, beaten biscuits were laboriously beaten and folded to incorporate air into the dough which expanded when heated in the oven causing the biscuit to rise. In eating, the advantage of the biscuit over a slice of bread was that it was harder,
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