[custom_adv] Fast food is a type of mass-produced food designed for commercial resale and with a strong priority placed on "speed of service" versus other relevant factors involved in culinary science. [custom_adv] Fast food was originally created as a commercial strategy to accommodate the larger numbers of busy commuters, travelers and wage workers who often did not have the time to sit down at a public house or diner and wait for their meal. [custom_adv] By making speed of service the priority, this 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). [custom_adv] Although a vast variety of food can be "cooked fast", "fast food" is a commercial term limited to food sold in a restaurant or store with frozen, preheated or precooked ingredients, and served to the customer in a packaged form for take-out/take-away. [custom_adv] Fast food restaurants are traditionally distinguished by their ability to serve food via a drive-through. Outlets may be stands or kiosks, which may provide no shelter or seating, or fast food restaurants (also known as quick service restaurants). [custom_adv] Franchise operations that are part of restaurant chains have standardized foodstuffs shipped to each restaurant from central locations.