Conveyor Belt Sushi
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, also called revolving sushi or rotation sushi, is a type of sushi restaurant common in Japan. In
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, it is also known as a sushi train. Plates serving the
sushi is a traditional Japanese dish made with , typically seasoned with sugar and salt, and combined with a variety of , such as seafood, vegetables, or meat: raw seafood is the most common, although some may be cooked. While sushi comes in n ...
are placed on a rotating
conveyor belt A conveyor belt is the carrying medium of a belt conveyor system (often shortened to a belt conveyor). A belt conveyor system consists of two or more pulleys (sometimes referred to as drums), with a closed loop of carrying medium—the conveyor b ...
that winds through the restaurant and moves past every table, counter and seat. The final bill is based on the number and type of plates of the consumed sushi. Some restaurants use a variation of the concept, such as miniature wooden "sushi boats" that travel through small canals, or miniature locomotive cars that travel on a track.


Restaurants

The distinguishing feature of conveyor belt sushi is the stream of plates winding through the restaurant. The selection is usually not limited to sushi; it may also include karaage,
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, salad, soup, fruits, desserts, and other foods and drinks. Some restaurants have
RFID Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter. When tri ...
tags or other systems in place to remove sushi that has rotated for too long.


Special orders

If customers cannot find their desired sushi or dish, they can make special orders. Sometimes speaker phones are available for this purpose above the conveyor belt, while more modern restaurants use a touchscreen display or tablet for this purpose. If a small quantity of food is ordered, it is placed on the conveyor belt but marked so other customers know that this dish was ordered by someone; usually the plate with the sushi sits on a labeled cylindrical stand to indicate that this is a special order. Some restaurants use a secondary belt for this purpose, or have an automated delivery tray that will send a special order directly to where a customer is sitting. For large orders the dishes may also be brought to the customer by an attendant. Condiments and utensils are usually found near the seats, such as
wasabi Wasabi (Japanese language, Japanese: , , or , ) or Japanese horseradish (''Eutrema japonicum'' syn. ''Wasabia japonica'') is a plant of the family Brassicaceae, which also includes horseradish and Mustard plant, mustard in other genus, genera. ...
, pickled ginger, chopsticks,
soy sauce Soy sauce (sometimes called soya sauce in British English) is a liquid condiment of China, Chinese origin, traditionally made from a fermentation (food), fermented paste of soybeans, roasted cereal, grain, brine, and ''Aspergillus oryzae'' or ''A ...
, and small dishes for the soy sauce. Self-served
tea Tea is an aromatic beverage prepared by pouring hot or boiling water over cured or fresh leaves of '' Camellia sinensis'', an evergreen shrub native to East Asia which probably originated in the borderlands of south-western China and nor ...
and ice water is usually complimentary, with cups stacked on a shelf above the conveyor belt and teabags or
green tea Green tea is a type of tea made from the leaves and buds of the '' Camellia sinensis'' that have not undergone the withering and oxidation process that creates oolong teas and black teas. Green tea originated in China in the late 1st millenn ...
powder in a storage container on the table. There is also a hot water faucet at the tables to make tea. On the shelves are usually wet
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s and
plastic Plastics are a wide range of synthetic polymers, synthetic or Semisynthesis, semisynthetic materials composed primarily of Polymer, polymers. Their defining characteristic, Plasticity (physics), plasticity, allows them to be Injection moulding ...
boxes to store sushi for take-out customers.


Billing

The bill is calculated by counting the number and type of plates of the consumed sushi. Plates with different colors, patterns, or shapes have different prices, usually ranging from 100
yen The is the official currency of Japan. It is the third-most traded currency in the foreign exchange market, after the United States dollar and the euro. It is also widely used as a third reserve currency after the US dollar and the euro. T ...
to 500 yen or the local equivalent (for example, a conveyor belt sushi restaurant in
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may offer a price range of 250 to 480 krónur). The cost of each plate is shown on signboards or posters in the restaurant. In general, cheap items come on plain plates, and the level of plate decoration is related to the price. The most expensive items tend to come on gold colored plates. Expensive items may be placed on two plates, with the price being the sum of the prices of the individual plates. Some conveyor belt sushi restaurant chains, such as Kappa Sushi or Otaru Zushi, have a fixed price of 100 yen for every plate. This is similar to the phenomenon of 100-yen shops. A button above the conveyor belt can be used to call the attendants to count the plates. Some restaurants have a counting machine where the customer drops the plates to be counted automatically, or they use RFID tagged plates and just count each stack at once with a special reader.


Conveyor operation

The sushi conveyor consists of a thin, narrow conveyor designed to fit within the tight confines of a sushi restaurant. Nearly 100% of sushi conveyors made in Japan are manufactured in
Ishikawa Prefecture is a Prefectures of Japan, prefecture of Japan located in the Chūbu region of Honshu island. Ishikawa Prefecture has a population of 1,096,721 (1 January 2025) and has a geographic area of 4,186 Square kilometre, km2 (1,616 sq mi). Ishikawa Pr ...
. The standard conveyor uses a specially designed plastic crescent top chain. The chain actually runs on its side (on its link plates), with the crescent plate attached to the other side plate by means of a snap pin. This gives the chain a very small bending radius and allows the conveyor to make the tight corners found in most conveyor belt sushi restaurants. Further, the horizontal layout means that there is no return side of the chain, which not only eliminates chain sag and sliding with the roller, but allows for a much shallower design. Major chain companies can offer different pin materials (stainless steel being common), plate shapes, surface treatments, and so on depending on the individual application. Many customers are also turning to sushi conveyor manufacturers for custom-designed plates to go with their conveyor. Innovations in sushi conveyors include chainless designs for quieter operation and design/layout freedom, multi-tiered conveyors to allow for more sushi to be displayed in limited spaces, and high speed lanes for custom orders.


History

Conveyor belt sushi was invented by Yoshiaki Shiraishi (1914–2001), who had problems staffing his small sushi restaurant and had difficulties managing the restaurant by himself. He got the idea of a conveyor belt sushi after watching beer bottles on a conveyor belt in an
Asahi Asahi (Japanese 朝日, 旭, or あさひ 'morning sun') may refer to: Places in Japan Cities * Asahi, Chiba (旭市; ''Asahi-shi'') Wards * Asahi-ku, Osaka (旭区; ''Asahi-ku'') * Asahi-ku, Yokohama (旭; ''Asahi-ku'') Towns * Asahi, Aichi ...
brewery. After five years of development, including the design of the conveyor belt and the speed of operations, Shiraishi opened the first conveyor belt sushi ''Mawaru Genroku Sushi'' in Higashiosaka in 1958, eventually expanding to up to 250 restaurants all over Japan. However, by 2001, his company had just 11 restaurants. Shiraishi also invented a ''robotic sushi'', served by
robot A robot is a machine—especially one Computer program, programmable by a computer—capable of carrying out a complex series of actions Automation, automatically. A robot can be guided by an external control device, or the robot control, co ...
s, but this idea has not had commercial success. Initially in a conveyor belt sushi restaurant, all customers were seated to face the conveyor belt, but this was not popular with groups. Subsequently, tables were added at right angles to the conveyor belt, allowing up to six people to sit at one table. This also reduced the length of conveyor belt necessary to serve a larger number of people. A conveyor belt sushi boom started in 1970 after a conveyor belt sushi restaurant served sushi at the Osaka World Expo. Another boom started in 1980, when eating out became more popular, and finally in the late 1990s, when inexpensive restaurants became popular after the burst of the economic bubble. In 2010, Akindo Sushiro was the most famous conveyor belt sushi brand in Japan. In 2023, some patrons were arrested for deliberately performing unhygienic acts such as licking or drinking from items passing in front of them towards other customers. These acts, dubbed " sushi terrorism", were performed as
prank A practical joke or prank is a trick played on people, generally causing the victim to experience embarrassment, perplexity, confusion, or discomfort.Marsh, Moira. 2015. ''Practically Joking''. Logan: Utah State University Press. The perpetrat ...
s with the video being shared online. Asked about this, Agriculture Minister Tetsuro Nomura said: “It is very unfortunate that such an act took place, as it had a significant impact on food industry operators and the Ministry of Agriculture, Forestry and Fisheries will pay special attention to the situation in the future.”


See also

*
Automat An automat is a type of fast-food restaurant where food and drink are served through a vending machine, typically without waitstaff. The world's first automat, Quisisana, opened in Berlin, Germany in 1895. By country Germany The first docu ...
, a Western self-service restaurant concept * Sushi machine * Conveyor belt hot pot *
Gyūdon , also known as , is a Cuisine of Japan, Japanese dish consisting of a bowl of rice topped with beef and onion, simmered in a mildly sweet sauce flavored with ''dashi'' (Bonito, fish and Kelp, seaweed stock), soy sauce and ''mirin'' (sweet rice ...
*
Casual dining restaurant Restaurants fall into several industry classifications, based upon menu style, preparation methods and pricing, as well as the means by which the food is served to the customer. This article mainly describes the situation in the US, while categor ...


References


External links


Conveyor belt sushi
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