Hamburger a style of rich, juicy burger in 2012 which is known as a "dirty burger" or "third-wave burger". In recent years Rustlers has sold pre-cooked hamburgers reheatable in a microwave oven in the United Kingdom. In the UK, as in North America and Japan, the term "burger" can refer simply to the patty, be it beef, some other kind of meat, or vegetarian. Fast food franchises sell American style fast food hamburgers in Australia and New Zealand. The traditional Australasian hamburgers are usually bought from fish and chip shops or milk bars. The hamburger meat is almost always ground beef,
Hamburger critics like Josh Ozersky, a food editor for "New York Magazine", claim that this sandwich was not a hamburger because the bread was toasted. One of the earliest claims comes from Charlie Nagreen, who in 1885 sold a meatball between two slices of bread at the Seymour Fair now sometimes called the Outagamie County Fair. The Seymour Community Historical Society of Seymour, Wisconsin, credits Nagreen, now known as "Hamburger Charlie", with the invention. Nagreen was fifteen when he was reportedly selling pork sandwiches at the 1885 Seymour Fair, made so customers could eat while walking. The Historical Society explains that