Sake
Encyclopedia
Sake is a rice
Rice
Rice is the seed of the monocot plants Oryza sativa or Oryza glaberrima . As a cereal grain, it is the most important staple food for a large part of the world's human population, especially in East Asia, Southeast Asia, South Asia, the Middle East, and the West Indies...

-based alcoholic beverage
Alcoholic beverage
An alcoholic beverage is a drink containing ethanol, commonly known as alcohol. Alcoholic beverages are divided into three general classes: beers, wines, and spirits. They are legally consumed in most countries, and over 100 countries have laws regulating their production, sale, and consumption...

 of Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese origin. It is sometimes spelled saké to show the pronunciation more clearly.

This beverage is called sake in English, but in Japanese
Japanese language
is a language spoken by over 130 million people in Japan and in Japanese emigrant communities. It is a member of the Japonic language family, which has a number of proposed relationships with other languages, none of which has gained wide acceptance among historical linguists .Japanese is an...

, sake (酒) or o-sake (お酒) refers to alcoholic drinks in general. The Japanese term for this specific beverage is Nihonshu (日本酒), meaning "Japanese alcohol".

Sake is also referred to in English as a form of rice wine
Rice wine
Rice wine is an alcoholic beverage made from rice. Unlike wine, which is made by fermentation of naturally sweet grapes and other fruit, rice "wine" results from the fermentation of rice starch converted to sugars...

. However, unlike true wine
Wine
Wine is an alcoholic beverage, made of fermented fruit juice, usually from grapes. The natural chemical balance of grapes lets them ferment without the addition of sugars, acids, enzymes, or other nutrients. Grape wine is produced by fermenting crushed grapes using various types of yeast. Yeast...

, in which alcohol is produced by fermenting the sugar naturally present in fruit, sake is made through a brewing process more like that of beer
Beer
Beer is the world's most widely consumed andprobably oldest alcoholic beverage; it is the third most popular drink overall, after water and tea. It is produced by the brewing and fermentation of sugars, mainly derived from malted cereal grains, most commonly malted barley and malted wheat...

, thus it's more like a rice brew than a rice wine. To make beer or sake, the sugar needed to produce alcohol must first be converted from starch. However, the brewing process for sake differs from beer brewing as well, notably in that for beer, the conversion of starch to sugar and sugar to alcohol occurs in two discrete steps, but with sake they occur simultaneously. Additionally, alcohol content also differs between sake, wine, and beer. Wine generally contains 9–16% alcohol and most beer is 3–9%, whereas undiluted sake is 18–20% alcohol, although this is often lowered to around 15% by diluting the sake with water prior to bottling.

History

The origins of sake are unclear; however, the earliest written reference to use of alcohol in Japan is recorded in the Book of Wei, of the Records of Three Kingdoms
Records of Three Kingdoms
Records of Three Kingdoms , is regarded as the official and authoritative historical text on the Three Kingdoms period of Chinese history covering the years 184-280 CE. Written by Chen Shou in the 3rd century, the work combines the smaller histories of the rival states of Cao Wei , Shu Han and...

and Bamforth (2005) noted that the probable origin of sake was in the Nara period of 710-794. This 3rd century Chinese text speaks of the Japanese drinking and dancing. Sake is also mentioned several times in the Kojiki
Kojiki
is the oldest extant chronicle in Japan, dating from the early 8th century and composed by Ō no Yasumaro at the request of Empress Gemmei. The Kojiki is a collection of myths concerning the origin of the four home islands of Japan, and the Kami...

, Japan's first written history, compiled in 712. People used sake for spiritual functions because people who drink it get a fever and what they believed to be a "spiritual high".

By the Asuka period
Asuka period
The , was a period in the history of Japan lasting from 538 to 710 , although its beginning could be said to overlap with the preceding Kofun period...

, true sake—made from rice, water, and kōji mold ' onMouseout='HidePop("27135")' href="/topics/Aspergillus_oryzae">Aspergillus oryzae
Aspergillus oryzae
Aspergillus oryzae is a filamentous fungus . It is used in Chinese and Japanese cuisine to ferment soybeans. It is also used to saccharify rice, other grains, and potatoes in the making of alcoholic beverages such as huangjiu, sake, and shōchū...

)—was the dominant alcohol. In the Heian period
Heian period
The is the last division of classical Japanese history, running from 794 to 1185. The period is named after the capital city of Heian-kyō, or modern Kyōto. It is the period in Japanese history when Buddhism, Taoism and other Chinese influences were at their height...

, sake began to be used for religious ceremony and people seldom drank it. Sake production was a government monopoly for a long time, but in the 10th century, temples and shrines began to brew sake, and they became the main centers of production for the next 500 years. The Tamon-in Diary, written by abbots of Tamon-in temple from 1478 to 1618, records many details of brewing in the temple. The diary shows that pasteurization and the process of adding ingredients to the main fermentation mash in three stages were established practices by this time.

In the 16th century, the technique of distillation was introduced into the Kyushu district from Ryukyu. The brewing of shochu, called "Imo—sake" started, and was sold at the central market in Kyoto
Kyoto
is a city in the central part of the island of Honshū, Japan. It has a population close to 1.5 million. Formerly the imperial capital of Japan, it is now the capital of Kyoto Prefecture, as well as a major part of the Osaka-Kobe-Kyoto metropolitan area.-History:...

. Powerful daimyo
Daimyo
is a generic term referring to the powerful territorial lords in pre-modern Japan who ruled most of the country from their vast, hereditary land holdings...

 imported various liquors and wine from China.
In the 18th century, Engelbert Kaempfer
Engelbert Kaempfer
Engelbert Kaempfer , a German naturalist and physician is known for his tour of Russia, Persia, India, South-East Asia, and Japan between 1683 and 1693. He wrote two books about his travels...

 and Isaac Titsingh
Isaac Titsingh
Isaac Titsingh FRS was a Dutch surgeon, scholar, merchant-trader and ambassador.During a long career in East Asia, Titsingh was a senior official of the Dutch East India Company . He represented the European trading company in exclusive official contact with Tokugawa Japan...

 published accounts identifying sake as a popular alcoholic beverage in Japan; but Titsingh was the first to try to explain and describe the process of sake brewing. The work of both writers was widely disseminated throughout Europe at the beginning of the 19th century.

During the Meiji Restoration
Meiji Restoration
The , also known as the Meiji Ishin, Revolution, Reform or Renewal, was a chain of events that restored imperial rule to Japan in 1868...

, laws were written that allowed anybody with the money and know-how to construct and operate their own sake breweries. Around 30,000 breweries sprang up around the country within a year. However, as the years went by, the government levied more and more taxes on the sake industry and slowly the number of breweries dwindled to 8,000.

Most of the breweries that grew and survived this period were set up by wealthy landowners. Landowners who grew rice crops would have rice left over at the end of the season and, rather than letting these leftovers go to waste, would ship it to their breweries. The most successful of these family breweries still operate today.

During the 20th century, sake-brewing technology grew by leaps and bounds. The government opened the sake-brewing research institute in 1904, and in 1907 the very first government-run sake tasting/competition was held. Yeast strains specifically selected for their brewing properties were isolated and enamel-coated steel tanks arrived. The government started hailing the use of enamel tanks as easy to clean, lasting forever, and being devoid of bacterial problems. (The government considered wooden barrels to be unhygienic because of the potential bacteria living in the wood.) Although these things are true, the government also wanted more tax money from breweries, as using wooden barrels means that a significant amount of sake is lost to evaporation (somewhere around 3%), which could have otherwise been taxed. This was the end of the wooden-barrel age of sake and the use of wooden barrels in brewing was completely eliminated.

In Japan, sake has long been taxed by the federal government. In 1898, this tax brought in about 55 million yen out of a total of about 120 million yen, about 46% of the government's total direct tax income.

During the Russo-Japanese War
Russo-Japanese War
The Russo-Japanese War was "the first great war of the 20th century." It grew out of rival imperial ambitions of the Russian Empire and Japanese Empire over Manchuria and Korea...

 in 1904–1905, the government banned the home brewing of sake. At the time, sake still made up an astonishing 30% of Japan's tax revenue. Since home-brewed sake is tax-free sake, the logic was that by banning the home brewing of sake, sales would go up, and more tax money would be collected. This was the end of home-brewed sake, and the law remains in effect today even though sake sales now make up only 2% of government income.

When World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 brought rice shortages, the sake-brewing industry was dealt a hefty blow as the government clamped down on the use of rice for brewing. As early as the late 17th century, it had been discovered that small amounts of alcohol could be added to sake before pressing to extract aromas and flavors from the rice solids, but during the war, pure alcohol and glucose
Glucose
Glucose is a simple sugar and an important carbohydrate in biology. Cells use it as the primary source of energy and a metabolic intermediate...

 were added to small quantities of rice mash, increasing the yield by as much as four times. 75% of today's sake is made using this technique, left over from the war years. There were even a few breweries producing "sake" that contained no rice at all. Naturally, the quality of sake during this time varied greatly.

After the war, breweries slowly began to recover, and the quality of sake gradually went up. However, new players on the scene—beer, wine, and spirits—became very popular in Japan, and in the 1960s beer consumption surpassed sake for the first time. Sake consumption continued to go down while, in contrast, the quality of sake steadily improved.

Today, sake has become a world beverage with a few breweries springing up in China, Southeast Asia, South America, North America, and Australia. More breweries are also turning to older methods of production.

While the rest of the world may be drinking more sake and the quality of sake has been increasing, sake production in Japan has been declining since the mid 1970s. The number of sake breweries is also declining. While there were 3,229 breweries nationwide in fiscal 1975, the number had fallen to 1,845 in 2007.

October 1 is the official Sake Day (日本酒の日) of Japan.

Rice

The rice used for brewing sake is called shuzo kotekimai (sake rice).
The grain is larger, stronger, and contains less protein and lipid than the ordinary rice eaten by Japanese. The rice has a starch component called shinpaku in the center of the grains. Since sake made from rice containing purely starch has a superior taste, the rice is polished to remove the bran. If a grain is small or weak, it will break in the process of polishing. This rice is used only for making sake, because it is unpalatable for eating. There are at least 80 types of sake rice in Japan.
Among these, Yamadanishiki, Gohyakumangoku, Miyamanishiki and Omachi rice are very popular.

Water

Water is one of the important ingredients for making sake.
Rigid restrictions are observed for the concentrations of certain chemical substances which can affect the taste and quality of sake.
The water used is almost always groundwater or well water.
Urban breweries usually import water from other areas, because of the difficulty of getting water of sufficient quality locally.

Brewing

Sake is produced by the multiple parallel fermentation of rice
Rice
Rice is the seed of the monocot plants Oryza sativa or Oryza glaberrima . As a cereal grain, it is the most important staple food for a large part of the world's human population, especially in East Asia, Southeast Asia, South Asia, the Middle East, and the West Indies...

. The rice is first polished to remove the protein
Protein
Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...

 and oil
Oil
An oil is any substance that is liquid at ambient temperatures and does not mix with water but may mix with other oils and organic solvents. This general definition includes vegetable oils, volatile essential oils, petrochemical oils, and synthetic oils....

s from the exterior of the rice grains, leaving behind starch
Starch
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined together by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store...

. Thorough milling leads to fewer congener
Congener
Congener has several different meanings depending on the field in which it is used. Colloquially, it is used to mean a person or thing like another, in character or action.-Biology:In biology, congeners are organisms within the same genus...

s and generally a more desirable product.

Newly polished rice is allowed to "rest" until it has absorbed enough moisture from the air so that it will not crack when immersed in water. After this resting period, the rice is washed clean of the rice powder produced during milling and then steeped in water. The length of time depends on the degree to which the rice was polished, ranging from several hours or even overnight for an ordinary milling to just minutes for highly polished rice.

After soaking, the rice is steamed on a conveyor belt. The degree of cooking must be carefully controlled; overcooked rice will ferment too quickly for flavors to develop well and undercooked rice will only ferment on the outside. The steamed rice is then cooled and divided into portions for different uses.

The microorganism Asperigillus oryzae is sprinkled onto the steamed rice and allowed to ferment for 5-7days(Uno et al., 2009). After this initial fermentation period, water and the yeast culture Saccharomyces cerevisiae are added to the koji (rice and mold mixture)and allowed to incubate at 4 degree Celsius for about 7 days (Uno et al., 2009). Over the next four days, pre-incubated mixture of steamed rice (90 kg), fermentated rice (90 kg) and water (440L) are added to the fermented mixture in three series (Uno et al., 2009).

This staggered approach allows time for the yeast to keep up with the increased volume. The mixture is now known as the main mash, or moromi (醪, also written 諸味).

The main mash then ferments, at approximately 15-20 degree celius for 2–3 weeks. With high-grade sake, fermentation is deliberately slowed by lowering the temperature to 10 °C (50 °F) or less.
Unlike malt
Malt
Malt is germinated cereal grains that have been dried in a process known as "malting". The grains are made to germinate by soaking in water, and are then halted from germinating further by drying with hot air...

 for beer, rice for sake does not contain the amylase
Amylase
Amylase is an enzyme that catalyses the breakdown of starch into sugars. Amylase is present in human saliva, where it begins the chemical process of digestion. Food that contains much starch but little sugar, such as rice and potato, taste slightly sweet as they are chewed because amylase turns...

 necessary for converting starch to sugar and so it must undergo a process of multiple fermentation. The addition of A. oryzae provides the necessary amylases, glucoamylases, and proteases to hydrolyze the nutrients of the rice to support the growth of the yeast(S.cerevisiae) (Uno et al., 2009). In sake production these two processes take place at the same time rather than in separate steps, so sake is said to be made by multiple parallel fermentation.

After fermentation, sake extracted from the solid mixtures through a filtration process. For some types of sake, a small amount of distilled alcohol, called brewer's alcohol (醸造アルコール), is added before pressing in order to extract flavors and aromas that would otherwise remain behind in the solids. In cheap sake, a large amount of brewer’s alcohol might be added to increase the volume of sake produced. Next, the remaining lees (a fine sediment) are removed, and the sake is carbon filtered and pasteurized. The sake is allowed to rest and mature and then usually diluted with water to lower the alcohol content from around 20% to 15% or so, before finally being bottled.

Tōji

is the job title of the sake brewer
Brewer
Brewer may refer to:*Brewer, someone who makes beer by brewing*Brewer , a disambiguation page that lists people with the surname Brewer*Brewer, Maine, a city in southern Penobscot County, Maine, United States, near the city of Bangor...

. It is a highly respected job in the Japanese society
Culture of Japan
The culture of Japan has evolved greatly over the millennia, from the country's prehistoric Jōmon period to its contemporary hybrid culture, which combines influences from Asia, Europe and North America...

, with tōji being regarded like musicians or painters
Japanese painting
is one of the oldest and most highly refined of the Japanese visual arts, encompassing a wide variety of genres and styles. As with the history of Japanese arts in general, the long history of Japanese painting exhibits synthesis and competition between native Japanese aesthetics and adaptation of...

. The title of tōji was historically passed on from father to son; today new tōji are either veteran brewery workers or are trained at universities. While modern breweries with refrigeration and cooling tanks operate year-round, most old-fashioned sake breweries are seasonal, operating only in the cool winter months. During the summer and fall most tōji work elsewhere, and are commonly found on farms, only periodically returning to the brewery to supervise storage conditions or bottling operations.

Maturing

The process during which the sake grows into a quality product during storage is called maturing.

Mature sake has reached its ideal point of growth. New sake is not liked because of its rough taste, whereas mature sake is mild, smooth and rich. However, if it is too mature, it also develops a rough taste. Nine to twelve months are required for sake to mature.

Aging is caused by physical and chemical factors such as oxygen supply, the broad application of external heat, nitrogen oxides, aldehydes and amino acids, among other unknown factors. It is said that Saussureae radix from the Japan cedar material of a barrel containing maturing sake comes to be valued, so the barrel is considered indispensable.

Varieties

Special-designation sake

There are two basic types of sake: and . Futsū-shu is the equivalent of table wine
Table wine
Table wine is a wine term with two different meanings: a wine style; and a quality level within wine classification.In the United States, table wine primarily designates a wine style - ordinary wine which is neither fortified nor sparkling....

 and accounts for the majority of sake produced. Tokutei meishō-shu refers to premium sakes distinguished by the degree to which the rice has been polished and the added percentage of brewer's alcohol or the absence of such additives.
There are eight varieties of special-designation sake.
Special Designation Ingredients Rice Polishing Ratio Percentage of Kōji rice
Rice, Kōji rice Below 50% Not less than 15%
Rice, Kōji rice, Distilled alcohol Below 50% Not less than 15%
Rice, Kōji rice Below 60% Not less than 15%
Rice, Kōji rice, Distilled alcoholThe weight of added alcohol must be below 10% of the weight of the rice (after polishing) used in the brewing process. Below 60% Not less than 15%
Rice, Kōji rice Below 60% or produced by special brewing method Not less than 15%
Rice, Kōji rice, Distilled alcohol Below 60% or produced by special brewing method Not less than 15%
Rice, Kōji rice Below 70% Not less than 15%
Rice, Kōji rice, Distilled alcohol Below 70% Not less than 15%

note:

Three ways to make the starter mash

  • Kimoto (生酛) is the traditional orthodox method for preparing the starter mash, which includes the laborious process of grinding it into a paste. This method was the standard for 300 years, but it is rare today.
  • Yamahai (山廃) is a simplified version of the kimoto method, introduced in the early 1900s. Yamahai skips the step of making a paste out of the starter mash. That step of the kimoto method is known as yama-oroshi, and the full name for yamahai is “yama-oroshi haishi” (山卸廃止), meaning “discontinuation of yama-oroshi.” While the yamahai method was originally developed to speed production time, it is slower than the modern method and is now used only in specialty brews for the earthy flavors it produces.
  • Sokujō (速醸), "quick fermentation", is the modern method of preparing the starter mash. Lactic acid, produced naturally in the two slower traditional methods, is added to the starter to inhibit unwanted bacteria. Sokujō sake tends to have a lighter flavor than kimoto or yamahai.

Different handling after fermentation

  • Namazake (生酒) is sake that has not been pasteurized
    Pasteurization
    Pasteurization is a process of heating a food, usually liquid, to a specific temperature for a definite length of time, and then cooling it immediately. This process slows microbial growth in food...

    . It requires refrigerated storage and has a shorter shelf-life than pasteurized sake.
  • Genshu (原酒) is undiluted sake. Most sake is diluted with water after brewing to lower the alcohol content from 18-20% down to 14-16%, but genshu is not.
  • Muroka (無濾過) means unfiltered. It refers to sake that has not been carbon filtered, but which has been pressed and separated from the lees, and thus is clear, not cloudy. Carbon filtration can remove desirable flavors and odors as well as bad ones, thus muroka sake has stronger flavors than filtered varieties.
  • Nigori
    Nigori
    (For the phonetic mark called , see Japanese typographic symbols#Phonetic marks (hatsuonkigō 発音記号)Nigori or is a variety of sake, an alcoholic beverage produced from rice, its name translates roughly to "cloudy" due to its appearance....

    zake
    (濁り酒) is cloudy sake. The sake is passed through a loose mesh to separate it from the mash. It is not filtered thereafter and there is much rice sediment in the bottle. Before serving, the bottle is shaken to mix the sediment and turn the sake white or cloudy.
  • Seishu (清酒), "clear/clean sake", is the Japanese legal definition of sake and refers to sake in which the solids have been strained out, leaving clear liquid. Thus nigorizake and doburoku (see below) are not seishu and therefore are not actually sake under Japanese law. However, nigorizake can receive the seishu status by being strained clear and having the lees put back in afterward.
  • Koshu (古酒) is "aged sake". Most sake does not age well, but this specially made type can age for decades, turning yellow and acquiring a honeyed flavor.
  • Taruzake (樽酒) is sake aged in wooden barrels or bottled in wooden casks. The wood used is Cryptomeria
    Cryptomeria
    Cryptomeria is a monotypic genus of conifer in the cypress family Cupressaceae formerly belonging to the family Taxodiaceae; it includes only one species, Cryptomeria japonica . It is endemic to Japan, where it is known as Sugi...

     (杉, sugi), which is also inaccurately known as Japanese cedar. Sake casks are often tapped ceremonially for the opening of buildings, businesses, parties, etc. Because the wood imparts a strong flavor, premium sake is rarely used for this type.
  • Shiboritate (搾立て), "freshly pressed", refers to sake that has been shipped without the traditional six-month aging/maturation period. The result is usually a more acidic, "greener" sake.
  • Fukurozuri (袋吊り) is a method of separating sake from the lees without external pressure by hanging the mash in bags and allowing the liquid to drip out under its own weight. Sake produced this way is sometimes called shizukazake (雫酒), meaning "drip sake".
  • Tobingakoi (斗瓶囲い) is sake pressed into 18-liter bottles ("tobin") with the brewer selecting the best sake of the batch for shipping.

Others

  • Amazake
    Amazake
    is a traditional sweet, low-alcoholic Japanese drink made from fermented rice. Amazake dates from the Kofun period, and it is mentioned in the Nihon Shoki. It is part of the family of traditional Japanese foods made using that includes miso, soy sauce, and sake....

    (甘酒) is a traditional sweet, low-alcoholic Japanese drink made from fermented rice.
  • Doburoku (濁酒) is the classic home-brew style of sake (although home brewing is illegal in Japan). It is created by simply adding kōji mold to steamed rice and water and letting the mixture ferment. The resulting sake is somewhat like a chunkier version of nigorizake.
  • (地酒) is locally brewed sake, the equivalent of microbrewing beer.
  • Kuroshu (黒酒) is sake made from unpolished rice (i.e., brown rice), and is more like Chinese rice wine
    Huangjiu
    Huangjiu is a type of Chinese beverage brewed directly from grains such as rice, millet, or wheat. Unlike baijiu, such liquors are not distilled, and contain less than 20% alcohol, due to the inhibition of fermentation by ethanol at that concentration...

    .
  • Teiseihaku-shu (低精白酒) is sake with a deliberately high rice-polishing ratio. It is generally held that the lower the rice polishing ratio (the percent weight after polishing), the better the potential of the sake. However, beginning around 2005, teiseihaku-shu has been produced as a specialty sake made with high rice-polishing ratios, usually around 80%, to produce sake with the characteristic flavor of rice itself.


Some other terms commonly used in connection with sake:
  • Nihonshu-do , also called the Sake Meter Value, or SMV
    SMV = (|1/specific gravity|−1) × 1443
    Specific gravity
    Specific gravity
    Specific gravity is the ratio of the density of a substance to the density of a reference substance. Apparent specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal volume of the reference substance. The reference substance is nearly always water for...

     is measured on a scale weighing the same volume of water at 4°C and sake at 15°C. The sweeter the sake, the lower the number. When the SMV was first used, 0 was designated the point between sweet sake and dry sake. Now +3 is considered neutral.
  • Seimai-buai (精米歩合) is the rice polishing ratio, the percentage of weight remaining after polishing. Generally, the lower the number, the better the sake's potential. A lower percentage usually results in a fruitier sake, whereas a higher percentage will taste more like rice.
  • Kasu
    Sake kasu
    are the lees left over from sake production. It can be used as a pickling agent, a cooking paste to add flavor to food and as a marinade....

    are pressed sake lees, the solids left after pressing and filtering. These are used for making tsukemono pickles
    Tsukemono
    are Japanese pickles. They are served with rice as okazu with drinks as an otsumami , as an accompaniment to or garnish for meals, and as a course in the kaiseki portion of a Japanese tea ceremony....

    , livestock feed, and shōchū
    Shochu
    is a Japanese distilled beverage. It is typically distilled from barley, sweet potatoes, or rice, though it is sometimes produced from other ingredients such as brown sugar, buckwheat or chestnut. Typically shōchū contains 25% alcohol by volume...

    , and as an ingredient in dishes like kasu soup.

Taste and flavor

The label on a bottle of sake gives a rough indication of its taste. Terms seen on the labels include: Nihonshu-do , San-do and Aminosan-do .

Nihonshu-do : Indicates how many carbohydrates and acid the sake contains. When comparing sake with water, sake that is heavier than water is called "-", and sake that is lighter than water is called "+". For example, "+10" is very dry, and "-10" is very sweet.

San-do : Indicates the density of acid, which is determined by titration. Sake of high san-do is dry, and low san-do is sweet.

Aminosan-do : Indicates a taste of umami. As the proportion of amino-acids rises, the sake has more and more umami.

Sake can have many flavor notes, such as apples, bananas, melons, flowers, herbs, spices, rice, chestnuts, chocolates, dry grapes, sherry, caramel sauce, etc. The flavor of apples comes from ethyl caproate, and bananas from isoamyl acetate. These two constituents are contained in many types of sake which is represented by Ginjyoshu .

Serving sake

In Japan sake is served chilled, at room temperature, or heated, depending on the preference of the drinker, the quality of the sake, and the season. Typically, hot sake is a winter drink, and high-grade sake is not drunk hot, because the flavors and aromas will be lost. This masking of flavor is the reason that low-quality and old sake is often served hot.

Sake is usually drunk from small cups called choko, and poured into the choko from ceramic flasks called tokkuri. Saucer-like cups called sakazuki are also used, most commonly at weddings and other ceremonial occasions. Recently, footed glasses made specifically for premium sake have also come into use.

Another traditional cup is the masu
Masu (Japanese)
A was originally a square wooden box used to measure rice in Japan during the feudal period. Masu existed in many sizes, typically covering the range from one to to five gō...

, a box usually made of hinoki
Chamaecyparis obtusa
Chamaecyparis obtusa is a species of cypress native to central Japan.It is a slow-growing tree which grows to 35 m tall with a trunk up to 1 m in diameter. The bark is dark red-brown...

or sugi
Cryptomeria
Cryptomeria is a monotypic genus of conifer in the cypress family Cupressaceae formerly belonging to the family Taxodiaceae; it includes only one species, Cryptomeria japonica . It is endemic to Japan, where it is known as Sugi...

, which was originally used for measuring rice. In some Japanese restaurants, as a show of generosity, the server may put a glass inside the masu or put the masu on a saucer and pour until sake overflows and fills both containers.

Aside from being served straight, sake can be used as a mixer for cocktail
Cocktail
A cocktail is an alcoholic mixed drink that contains two or more ingredients—at least one of the ingredients must be a spirit.Cocktails were originally a mixture of spirits, sugar, water, and bitters. The word has come to mean almost any mixed drink that contains alcohol...

s, such as tamagozake
Tamagozake
is a drink consisting of heated sake, sugar and a raw egg. It translates as "egg sake", being made of the kanji 卵 tamago and 酒 saké. Outside of Japan, tamagozake is sometimes referred to as sake-nog, due to its resemblance to eggnog...

, saketini
Saketini
Saketini is the name of a cocktail that uses sake and other ingredients such as simple syrups, distilled spirits, liqueurs, juices and garnishes...

s, nogasake, or the sake bomb
Sake bomb
The sake bomb or sake bomber is a beer cocktail made by pouring sake into a shot glass and dropping it into a glass of beer.Sometimes two chopsticks are placed parallel on top of the glass of beer, and the shot glass is carefully balanced between them. The drinker then chants...

.

Storage

Sake is sold in volume units divisible by 180 mL (a ), the traditional Japanese unit
Japanese units of measurement
' is the traditional Japanese system of measurement. The name shakkanhō originates from the name of two of the units, the shaku, a unit of length, and the kan, a mass measurement.The system is Chinese in origin...

 for cup size
Cup (unit)
The cup is a customary unit of measurement for volume, used in cooking to measure liquids and bulk foods such as granulated sugar...

: sake is traditional sold by the gō-sized cup, or in a 1.8 L (one shō, ten gō) sized flask. Today sake is also often sold in 720 mL (four gō) bottles – note that this is almost the same as the 750 mL standard for wine bottle
Wine bottle
A wine bottle is a bottle used for holding wine, generally made of glass. Some wines are fermented in the bottle, others are bottled only after fermentation. They come in a large variety of sizes, several named for Biblical kings and other figures. The standard bottle contains 750 ml,...

s, but is divisible into 4 gō.

In general, it is best to keep sake refrigerated in a cool or dark room, as prolonged exposure to heat or direct light will lead to spoilage. In addition, sake stored at relatively high time can lead to formation of dicetopiperazine, a cyclo (Pro-Leu) that makes it bitter as it ages (Lecture Note, Oct. 2011). Sake has high microbiological stability due to its high content of ethanol. However, incidences of spoilage has been known to occur. One of the microoganisms implicated in this spoilage is lactic acid bacteria (LAB) that has grown tolerant to ethanol and is referred to as hiochi-bacteria (Suzuki et al., 2008). Sake stored at room temperature is best consumed within a few months after purchase.

After opening a bottle of sake, it is best consumed within 2 or 3 hours. It is possible to store sake in the refrigerator, but it is recommended to finish the sake within 2 days. This is because once premium sake is opened it begins to oxidize, which affects the taste. If the sake is kept in the refrigerator for more than 3 days, it will lose its "best" flavor. However, this does not mean it should be disposed of if not consumed. Generally, sake can keep very well and still taste just fine after weeks in the refrigerator. How long a sake will remain drinkable depends on the actual product itself, and whether it is sealed with a wine vacuum top.

Ceremonial use

Sake is often consumed as part of Shinto
Shinto
or Shintoism, also kami-no-michi, is the indigenous spirituality of Japan and the Japanese people. It is a set of practices, to be carried out diligently, to establish a connection between present day Japan and its ancient past. Shinto practices were first recorded and codified in the written...

 purification rituals (compare with the use of grape wine
Wine
Wine is an alcoholic beverage, made of fermented fruit juice, usually from grapes. The natural chemical balance of grapes lets them ferment without the addition of sugars, acids, enzymes, or other nutrients. Grape wine is produced by fermenting crushed grapes using various types of yeast. Yeast...

 in the Christian
Christian
A Christian is a person who adheres to Christianity, an Abrahamic, monotheistic religion based on the life and teachings of Jesus of Nazareth as recorded in the Canonical gospels and the letters of the New Testament...

 Eucharist
Eucharist
The Eucharist , also called Holy Communion, the Sacrament of the Altar, the Blessed Sacrament, the Lord's Supper, and other names, is a Christian sacrament or ordinance...

). Sakes served to gods as offerings prior to drinking are called Omiki or Miki (お神酒, 神酒). People drink Omiki with gods to communicate with them and to solicit rich harvests the following year. During World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, kamikaze
Kamikaze
The were suicide attacks by military aviators from the Empire of Japan against Allied naval vessels in the closing stages of the Pacific campaign of World War II, designed to destroy as many warships as possible....

 pilots drank sake prior to carrying out their missions.

In a ceremony called kagami biraki
Kagami biraki
Kagami Biraki is a Japanese traditional ceremony which literally translates to "Opening the Mirror" or, also, "Breaking of the Mochi." It traditionally falls on January 11 It refers to the opening of a Kagami mochi, or to the opening of a cask of Sake at a party or ceremony.-History:The fourth...

, wooden casks of sake are opened with mallets during Shinto festivals, weddings, store openings, sports and election victories, and other celebrations. This sake, called iwai-zake ("celebration sake"), is served freely to all to spread good fortune.

At the New Year
New Year
The New Year is the day that marks the time of the beginning of a new calendar year, and is the day on which the year count of the specific calendar used is incremented. For many cultures, the event is celebrated in some manner....

 many Japanese people drink a special sake called toso
Toso
, or o-toso, is spiced medicinal sake traditionally drunk during New Year celebrations in Japan.-Culture:Toso is drunk to flush away the previous year's maladies and to aspire to lead a long life...

. Toso is a sort of iwai-zake made by soaking tososan, a Chinese powdered medicine, overnight in sake. Even children sip a portion. In some regions, the first sips of toso are taken in order of age, from the youngest to the eldest.

See also

  • Amylolytic process
    Amylolytic process
    Amylolysis, or the amylolytic process, is the conversion of starch into sugar by the action of acids or enzymes like amylase.The amylolytic process is used in the brewing of alcohol from grains. Since grains contain starches but little to no simple sugars, the sugar needed to produce alcohol is...

  • Awamori
    Awamori
    Awamori is an alcoholic beverage indigenous to and unique to Okinawa, Japan. It is made from rice, and is not a direct product of brewing but of distillation ....

    , a distilled rice liquor produced in Okinawa
  • Chuak
    Chuak
    Chuak is the traditional Tripuri rice-beer. It is made by fermenting rice in water. It's usually drunk on social occasions of any Tripuri ceremony as a ritual. Chuak is offered to village elders on any occasion or celebration in a traditional Tripuri family....

    , a Tripuri
    Tripuri cuisine
    The Tripuri people are the original inhabitants of the state of Tripura in North East India. The indigenous Tripuri people comprises the communities of Tipra, Reang, Jamatia, Noatia, Uchoi and others...

     rice beer
  • Gekkeikan
    Gekkeikan
    is a Japanese manufacturer of sake based in Kyoto, Japan. Founded in 1637 by Jiemon Okura, in Fushimi, it is one of the world's oldest companies. The name of the company literally means "laurel wreath"....

    , a major sake brewery
  • The , a method of sake brewing was practiced at the in the Amagasaki Domain
    Amagasaki Domain
    The was a feudal domain of Japan during the Edo period. It had its administrative headquarters at Amagasaki Castle. The domain extended over parts of Settsu Province that correspond to portions of the cities of Amagasaki, Nishinomiya, Ashiya, Kobe, Itami, and Takarazuka, in modern-day Hyōgo...

     of Settsu Province
    Settsu Province
    was a province of Japan, which today comprises the eastern part of Hyōgo Prefecture and the northern part of Osaka Prefecture. It was also referred to as or .Osaka and Osaka Castle were the main center of the province.-History:...

     during the Edo period
    Edo period
    The , or , is a division of Japanese history which was ruled by the shoguns of the Tokugawa family, running from 1603 to 1868. The political entity of this period was the Tokugawa shogunate....

  • Rice wine
    Rice wine
    Rice wine is an alcoholic beverage made from rice. Unlike wine, which is made by fermentation of naturally sweet grapes and other fruit, rice "wine" results from the fermentation of rice starch converted to sugars...

    , a category including many different alcoholic drinks made from rice
  • Sawanotsuru
    Sawanotsuru
    is one of Japan’s largest producers of sake. The company was founded in 1717 in Nada-ku, Kobe, a region famous for sake production. According to Sawanotsuru Co., its sake is exported to approximately 30 countries.-Origins:...

    , a major sake brewery
  • Shōchū
    Shochu
    is a Japanese distilled beverage. It is typically distilled from barley, sweet potatoes, or rice, though it is sometimes produced from other ingredients such as brown sugar, buckwheat or chestnut. Typically shōchū contains 25% alcohol by volume...

    , a distilled beverage, distinct from sake
  • Tōji (brewmaster)
  • Toso
    Toso
    , or o-toso, is spiced medicinal sake traditionally drunk during New Year celebrations in Japan.-Culture:Toso is drunk to flush away the previous year's maladies and to aspire to lead a long life...

     Spiced medicinal sake

Further reading


External links

Sake association
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