Other kitchen types
Restaurant and canteen kitchens found in hotels, hospitals, army barracks and similar establishments are generally (in developed countries) subject to public health laws. They are inspected periodically by public-health officials, and forced to close if they don't meet hygienic requirements mandated by law.
Canteen kitchens (and castle kitchens) were often the places where new technology was used first. For instance, Benjamin Thompson's "energy saving stove", an early 19th century fully-closed iron stove using one fire to heat several pots, was designed for large kitchens; another thirty years passed before they were adapted for domestic use.
Today's western restaurant kitchens typically have tiled walls and floors and use stainless steel for other surfaces (workbench, but also door and drawer fronts) because these materials are durable and easy to clean. Professional kitchens are often equipped with gas stoves, as these allow cooks to regulate the heat quicker and more finely than electrical stoves. Some special appliances are typical for professional kitchens, such as large installed deep fryers, steamers, or a Bain Marie. (As of 2004, steamers—not to be confused with a pressure cooker—are beginning to find their way into domestic households, sometimes as a combined appliance of oven and steamer.)
The fast food and convenience food trends have also changed the way restaurant kitchens operate. There is a trend for restaurants to only "finish" delivered convenience food or even just re-heat completely prepared meals, maybe at the utmost grilling a hamburger or a steak.
The kitchens in railway dining cars present special challenges: space is constrained, and nevertheless the personnel must be able to serve a great number of meals quickly. Especially in the early history of the railway this required flawless organization of processes; in modern times, the microwave oven and prepared meals have made this task a lot easier. Galleys are kitchens aboard ships (although the term galley is also often used to refer to a railroad dining car's kitchen). On yachts, galleys are often cramped, with one or two gas burners fuelled by a gas bottle, but kitchens on cruise ships or large warships are comparable in every respect with restaurants or canteen kitchens. On passenger airplanes, the kitchen is reduced to a mere pantry, the only function reminiscent of a kitchen is the heating of in-flight meals (where they haven't been "optimized" away altogether) delivered by a catering company. An extreme form of the kitchen occurs in space, e.g. aboard a Space Shuttle (where it is also called the "galley") or the International Space Station. The astronauts' food is generally completely prepared, dehydrated, and sealed in plastic pouches, and the kitchen is reduced to a rehydration and heating module.
Outdoor areas in which food is prepared are generally not considered to be kitchens, although an outdoor area set up for regular food preparation, for instance when camping, might be called an "outdoor kitchen". Military camps and similar temporary settlements of nomads may have dedicated kitchen tents.
In Schools where Home Economics (HE) or Food technology (previously known as Domestic science) is taught, there will be a series of kitchens with multiple equipment (similar in some respects to laboratories) solely for the purpose of teaching. These will consist of between 6 and 12 workstations, each with their own oven, sink and kitchen utensils.

Restaurants range from unpretentious lunching or dining places catering to people working nearby, with simple food served in simple settings at low prices, to expensive establishments serving refined food and wines in a formal setting. In the former case, customers usually wear casual clothing. In the latter case, depending on culture and local traditions, customers might wear semi-casual, semi-formal, or even in rare cases formal wear.
Standardly customers sit at tables, their orders are taken by a waiter, who brings the food when it is ready, and the customers pay the bill before leaving. In finer restaurants there will be a host or hostess or even a maître d'hôtel to welcome customers and to seat them. Other staff waiting on customers include busboys and sommeliers.
Depending on local custom, a tip of varying proportions of the bill (often 10-20%) may be added, which (usually) goes to the staff rather than the restaurant. This gratuity might be added directly to the bill or it may be given voluntarily.
Restaurants often specialise in certain types of food or present a certain unifying, and often entertaining, theme. For example, there are seafood restaurants, vegetarian restaurants or ethnic restaurants. Generally speaking, restaurants selling "local" food are simply called restaurants, while restaurants selling food of foreign origin are called accordingly, for example, a Chinese restaurant and a French restaurant..
Depending on local customs and the establishment, restaurants may or may not serve alcoholic beverages. Restaurants are often prohibited from selling alcohol without a meal by alcohol sale laws; such sale is considered to be activity for bars, which are meant to have more severe restrictions. Some restaurants are licensed to serve alcohol ("fully licensed"), and/or permit customers to "bring your own" alcohol (BYO / BYOB).

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