There are dozens of different types of biscuits manufactured and eaten worldwide, with no single source listing all of them. Biscuits are defined in the United States as a savory flour-based quick bread, while biscuits in English Commonwealth countries are the same as cookies in the United States.
Common types of biscuits include rolled biscuits, drop biscuits, scones and shortcakes, though many other types exist. Biscuits can be made from a wide variety of dough types and formation methods, including extrusion through a biscuit machine, rolling, cutting and forming into wafers or crackers. They are commonly included in breakfast sandwiches, as a side dish or as a staple in biscuits and gravy.