Hamburger
A hamburger is a cooked patty served on a round bun, and a burger today may be made from plant or animal matter. The term originated in the nineteenth century when the flesh of captive cattle in the Hamburg region of Germany was served raw in patties called a hamburger steak, and this dish was then spread to the USA by German immigrants. Early in the twentieth century in the USA these patties were cooked and served between slices of bread to provide convenience food and the practice became popular, and the word often became shortened to just burger. Burgers have spread globally and new types are evolving in response to the high CO2 and methane emissions of animal agriculture and the damaging health effects of eating animals.