The Hamburger is the most eaten food in the whole world. The first hamburgers were made and sold in Connecticut in 1895 by an American chef called Louis Lassen. Louis called them hamburgers because he was given the recipe by sailors from Hamburg in Germany.

Hamburgers have became a favourite in America in the early part of the twentieth century. Their popularity grew even more after the Second World War, when they were bought in large quantities by teenagers who prefered fast food to family meals. In 1948 two brothers, Dick and Mac McDonald opened a drive-in hamburger restaurant in San Bernandino, California. Since then over 25,000 McDonald's restaurants have been opened worldwide and now 35 million McDonald's hamburgers are eaten every day in 115 countries from India to the Arctic Circle.

Hisotry of burger

15th century

Beginning in the 15th century, minced beef was a valued delicacy throughout Europe. Hashed beef was made into sausage in several different regions of Europe.

17th century

Ships from the German port of Hamburg, Germany began calling on Russian ports. During this period the Russian steak tartare was brought back to Germany and called "tartare steak".

18th and 19th centuries

Hamburg steak

In the late 18th century, the largest ports in Europe were in Germany. Sailors who had visited the ports of Hamburg, Germany and New York, brought this food and term "Hamburg steak" into popular usage. To attract German sailors, eating stands along the New York city harbor offered "steak cooked in the Hamburg style". In 1802, the Oxford English Dictionary defined Hamburg steak as salt beef. It had little resemblance to the hamburger we know today. It was a hard slab of salted minced beef, often slightly smoked, mixed with onions and breadcrumbs. The emphasis was more on durability than taste.

Immigrants to the United States from German-speaking countries brought with them some of their favorite foods. One of them was Hamburg Steak. The Germans simply flavored shredded low-grade beef with regional spices, and both cooked and raw it became a standard meal among the poorer classes. In the seaport town of Hamburg, it acquired the name Hamburg steak. Today, this hamburger patty is no longer called Hamburg Steak in Germany but rather "Frikadelle", "Frikandelle" or "Bulette", originally Italian and French words.

American hamburgers

As mentioned, the Glasse cookbook was popular in America but the Texas historian Frank X. Tolbert attributes the American version to Fletcher Davis of Athens, Texas. Davis is believed to have sold hamburgers at his café at 115 Tyler Street in Athens, Texas in the late 1880s, then brought them to the 1904 St. Louis World's Fair. An article about Louis' Lunch in The New York Times on January 12, 1974, stated that the McDonald's hamburger chain claims the inventor was an unknown food vendor at the 1904 St. Louis World's Fair. Tolbert's research documented that this vendor was in fact Fletcher Davis. Dairy Queen spokesman Bob Phillips made a similar claim for Dairy Queen in a commercial filmed in Athens in the 1980s calling the town the birthplace of the hamburger.

Residents of Hamburg, New York, which was named after Hamburg, Germany, attribute the hamburger to Ohioans Frank and Charles Menches. According to legend, the Menches brothers were vendors at the 1885 Erie County Fair (then called the Buffalo Fair) when they ran out of sausage for sandwiches and used beef instead. They named the result after the location of the fair.^[9][10] But, Frank Menches's obituary in The New York Times states instead that these events took place at the 1892 Summit County Fair in Akron, Ohio.^[11]

The Seymour Community Historical Society of Seymour, Wisconsin, credits Charlie Nagreen, now known as "Hamburger Charlie", with the invention of the hamburger. Nagreen was fifteen when he reportedly made sandwiches out of meatballs that he was selling at the 1885 Seymour Fair (now the Outagamie County Fair), so that customers could eat while walking. The Historical Society explains that Nagreen named the hamburger after the Hamburg steak with which local German immigrants were familiar.

The Library of Congress credits Louis Lassen of Louis' Lunch, a small lunch wagon in New Haven, Connecticut, for selling the first hamburger and steak sandwich in the U.S. in 1895. New York magazine states that, "The dish actually had no name until some rowdy sailors from Hamburg named the meat on a bun after themselves years later", noting also that this claim is subject to dispute.

There is good evidence that the first hamburger served on a bun was made by Oscar Bilby of Tulsa in 1891.

"In April of 1995, the Dallas Morning News reported Oklahoma author says Tulsa beats out Texas as the birthplace of delicacy. Michael Wallis, author of "Route 66, The Mother Road", was quoted by the newspaper to say he had discovered Tulsa's place in culinary history. The discovery was made while researching the state’s tastiest hamburgers. What better place to start than the restaurant that has been voted Tulsa's best burger more often than any other restaurant since 1933…Weber’s Root Beer Stand. Mr. Wallis’ research revealed that Oscar Weber Bilby was the first person to serve a real hamburger. On July 4, 1891, ground beef was served on his wife’s homemade buns. The Fourth of July party took place on his farm, just west of present day Tulsa. Until then, ground beef had been served in Athens, Texas on simple slices of bread, known presently and then as a "patty melt". According to the Tulsa-based author, the bun is essential. Therefore, in 1995, Governor Frank Keatingcited Athens, Texas' feat of ground beef between two slices of bread to be a minor accomplishment. The Governor's April 1995 Proclamation also cites the first true hamburger on the bun, as meticulous research shows, was created and consumed in Tulsa in 1891. The Governor's Proclamation cites April 13, 1995 as Tulsa as "The Real Birthplace of the Hamburger."

The hamburger bu was invented in 1916 by a fry cook named Walter Anderson, who co-founded White Castle in 1921.

Hamburger today

Hamburgers are usually a feature of fast food restaurants. The hamburgers served in major fast food establishments are usually mass-produced in factories and frozen for delivery to the site. These hamburgers are thin and of uniform thickness, differing from the traditional American hamburger prepared in homes and conventional restaurants, which is thicker and prepared by hand from ground beef. Generally most American hamburgers are round, but some fast-food chains, such as Wendy's, sell square-cut hamburgers. Hamburgers in fast food restaurants are usually grilled on a flat-top, but some firms, such as Burger King use a gas flame grilling process. At conventional American restaurants, hamburgers may be ordered "rare" (occasionally requiring the signing of awaiver), but normally are served medium-well or well-done for food safety reasons. Fast food restaurants do not usually offer this option.

The McDonald's fast-food chain sells a sandwich called the Big Mac, one of the world's top selling hamburgers. Other major fast-food chains, including Burger King (also known as Hungry Jack's in Australia), A&W, Culver's, Whataburger, Carl's Jr./Hardee's chain, Wendy's (known for their square patties), Jack in the Box, Cook Out, Harvey's, Shake Shack, In-N-Out Burger, Five Guys, Fatburger, Vera's, Burgerville, Back Yard Burgers, Lick's Homeburger, Roy Rogers,Smashburger and Sonic also rely heavily on hamburger sales. Fuddruckers and Red Robin are popular hamburger chains that specialize in mid-tier "restaurant-style" variety of hamburgers. The "slider" style of mini hamburger is still popular regionally in the White Castle and Krystal chains.

Some North American establishments offer a unique take on the hamburger beyond what is offered in fast food restaurants, using upscale ingredients such as sirloin or other steak along with a variety of different cheeses, toppings, and sauces. Some examples would be the Bobby's Burger Palace chain founded by well-known chef and Food Network star Bobby Flay.

Hamburgers are often served as a fast dinner, picnic or party food, and cooked outdoors on barbecue grills.

Raw hamburger may contain harmful bacteria that can produce food-borne illness such as Escherichia coli O157:H7, due to the occasional initial improper preparation of the meat, so caution is needed during handling and cooking. Because of the potential for food-borne illness, the USDA recommends hamburgers be cooked to an internal temperature of 170 °F (80 °C). If cooked to this temperature, they are considered well-done.

A high-quality hamburger patty is made entirely of ground (minced) beef and seasonings; this may be described as an "all-beef hamburger" or "all-beef patties" to distinguish them from inexpensive hamburgers made with added flour, textured vegetable protein, ammonia treated defatted beef trimmings what the company Beef Products Inc, calls “lean finely textured beef”, Advanced meat recovery (see below: Health-related controversies) or other fillers to decrease their cost. In the 1930s ground liver was sometimes added to the patties. Some cooks prepare their patties with binders, such as eggs or bread crumbs. Seasonings are also commonly included with the hamburger patty, most commonly salt and pepper, and others such as parsley, onions, soy sauce, Thousand Island dressing, onion soup mix, or Worcestershire sauce. Many name brand seasoned salt products are also used.