Fast food is a type of mass-produced food designed for commercial resale, with a strong priority placed on speed of service. Fast food is a commercial term, limited to food sold in a restaurant or store with frozen, preheated or precooked ingredients and served in packaging for take-out or takeaway. Fast food was created as a commercial strategy to accommodate large numbers of busy commuters, travelers and wage workers. In 2018, the fast-food industry was worth an estimated $570 billion globally.[1]
The fastest form of "fast food" consists of pre-cooked meals which reduce waiting periods to mere seconds. Other fast-food outlets, primarily hamburger outlets such as McDonald's and Burger King, use mass-produced, pre-prepared ingredients (bagged buns and condiments, frozen beef patties, vegetables which are pre-washed, pre-sliced, or both; etc.) and cook the meat and french fries fresh, before assembling "to order".
Fast-food restaurants are traditionally distinguished by the drive-through. Outlets may be stands or kiosks, which may provide no shelter or seating,[2] or fast-food restaurants (also known as quick-service restaurants).[3] Franchise operations that are part of restaurant chains have standardized foodstuffs shipped to each restaurant from central locations.[4]
Many fast foods tend to be high in saturated fat, sugar, salt and calories.[5] Fast-food consumption has been linked to increased risk of cardiovascular disease, colorectal cancer, obesity, high cholesterol, insulin resistance conditions and depression.[6][7][8][9] These correlations remain strong even when controlling for confounding lifestyle variables, suggesting a strong association between fast-food consumption and increased risk of disease and early mortality.
The concept of ready-cooked food for sale is closely connected with urban developments. Homes in emerging cities often lacked adequate space or proper food preparation accoutrements. Additionally, procuring cooking fuel could cost as much as purchased produce. Frying foods in vats of searing oil proved as dangerous as it was expensive. Homeowners feared that a rogue cooking fire "might easily conflagrate an entire neighborhood".[11]
Thus, urbanites were encouraged to purchase pre-prepared meats or starches, such as bread or noodles, whenever possible. This also ensured that customers with strictly limited time (a commuter stopping to procure dinner to bring home to their family, for example, or an hourly laborer on a short lunch break) were not inconvenienced by waiting for their food to be cooked on-the-spot (as is expected from a traditional "sit down" restaurant). In Ancient Rome, cities had street stands—a large counter with a receptacle in the middle from which food or drink would have been served.[12]
It was during post-WWII American economic boom that Americans began to spend more and buy more as the economy boomed and a culture of consumerism bloomed. As a result of this new desire to have it all, coupled with the strides made by women while the men were away, both members of the household began to work outside the home. Eating out, which had previously been considered a luxury, became a common occurrence, and then a necessity. Workers, and working families, needed quick service and inexpensive food for both lunch and dinner. The traditional family dinner is increasingly being replaced by the consumption of takeaway fast food. As a result, the time invested on food preparation is getting lower, with an average woman in the United States spending 47 minutes per day preparing food and the average man spending 19 minutes per day in 2013.[13]
Pre-industrial Old World
In the cities of Roman antiquity, much of the urban population living in insulae, multi-story apartment blocks, depended on food vendors for many of their meals; the Forum itself served as a marketplace where Romans could purchase baked goods and cured meats.[14] In the mornings, bread soaked in wine was eaten as a quick snack and cooked vegetables and stews later in popina, a simple type of eating establishment.[15] In Asia, 12th-century Chinese ate fried dough, soups and stuffed buns, all of which still exist as contemporary snack food.[16] Their Baghdadi contemporaries supplemented home-cooked meals with processed legumes, purchased starches, and even ready-to-eat meats.[17] During the Middle Ages, large towns and major urban areas such as London and Paris supported numerous vendors that sold dishes such as pies, pasties, flans, waffles, wafers, pancakes and cooked meats. As in Roman cities during antiquity, many of these establishments catered to those who did not have means to cook their own food, particularly single households. Unlike richer town dwellers, many often could not afford housing with kitchen facilities and thus relied on fast food. Travelers such as pilgrims en route to a holy site, were among the customers.[18]
United Kingdom

In areas with access to coastal or tidal waters, 'fast food' frequently included local shellfish or seafood, such as oysters or, as in London, eels. Often this seafood was cooked directly on the quay or close by.[19] The development of trawler fishing in the mid-nineteenth century led to the development of a British favourite, fish and chips, and the first shop in 1860.[20]

A blue plaque at Oldham's Tommyfield Market marks the origin of the fish and chip shop and fast food industries.[20] As a cheap fast food served in a wrapper, fish and chips became a stock meal among the Victorian working classes.[20] Via the Industrial Revolution, the fish and chip business expanded rapidly in Britain during the 19th century to satisfy the needs of the growing industrial population.[21] By 1910, there were more than 25,000 fish and chip shops across the UK, and in the 1920s there were more than 35,000 shops.[22] Harry Ramsden's fast food restaurant chain opened its first fish and chip shop in Guiseley, West Yorkshire in 1928. On a single day in 1952, the shop served 10,000 portions of fish and chips, earning a place in the Guinness Book of Records.[23]
British fast food had considerable regional variation. Sometimes the regionality of a dish became part of the culture of its respective area, such as the Cornish pasty and deep-fried Mars bar. The content of fast food pies has varied, with poultry (such as chickens) or wildfowl commonly being used. Since the Second World War, turkey has been used more frequently in fast food.[24] The UK has adopted fast food from other cultures as well, such as pizza, doner kebab, and curry. More recently, healthier alternatives to conventional fast food have also emerged.
United States

As automobiles became popular and more affordable following World War I, drive-in restaurants were introduced. The American company White Castle, founded by Billy Ingram and Walter Anderson in Wichita, Kansas in 1921, is generally credited with opening the first fast food outlet and first hamburger chain, selling hamburgers for five cents each.[25] Walter Anderson had built the first White Castle restaurant in Wichita in 1916, introducing the limited menu, high-volume, low-cost, high-speed hamburger restaurant.[26] Among its innovations, the company allowed customers to see the food being prepared. White Castle was successful from its inception and spawned numerous competitors.
Franchising was introduced in 1921 by A&W Root Beer, which franchised its distinctive syrup. Howard Johnson's first franchised the restaurant concept in the mid-1930s, formally standardizing menus, signage and advertising.[26]
Curb service was introduced in the late 1920s and was mobilized in the 1940s when carhops strapped on roller skates.[27]
The United States has the largest fast food industry in the world, and American fast food restaurants are located in over 100 countries. Approximately 5.4 million U.S. workers are employed in the areas of food preparation and food servicing, including fast food in the US as of 2018.[28] Worries of an obesity epidemic and its related illnesses have inspired many local government officials in the United States to propose to limit or regulate fast-food restaurants. Yet, US adults are unwilling to change their fast food consumption even in the face of rising costs and unemployment characterized by the great recession, suggesting an inelastic demand.[29] However, some areas are more affected than others. In Los Angeles County, for example, about 45% of the restaurants in South Central Los Angeles are fast-food chains or restaurants with minimal seating. By comparison, only 16% of those on the Westside are such restaurants.[30]
In 2023, the median age of a fast-food worker was 22, and workers' wages make up about one third of the cost of operating a fast food restaurant.