In Japan, sake is served chilled (reishu 冷酒), at room temperature (jōon 常温), or heated (atsukan 熱燗), depending on the preference of the drinker, the characteristics of the sake, and the season.
Typically, hot sake is a winter drink, and high-grade sake is not usually drunk hot, because the flavors and aromas may be lost.
Most lower-quality sake is served hot because that is the traditional way and it often tastes better that way, not so that flaws are covered up.
There are gradations of temperature both for chilling and heating, about every 5 °C (9.0 °F), with hot sake generally served around 50 °C (122 °F), and chilled sake around 10 °C (50 °F), like white wine.
Hot sake that has cooled (kanzamashi 燗冷まし) may be reheated.

Sake is traditionally drunk from small cups called choko or o-choko (お猪口) and poured into the choko from ceramic flasks called tokkuri.
This is very common for hot sake, where the flask is heated in hot water and the small cups ensure that the sake does not get cold in the cup, but may also be used for chilled sake.
Traditionally one does not pour one's own drink, which is known as tejaku (手酌), but instead members of a party pour for each other, which is known as shaku (酌).
This has relaxed in recent years, but is generally observed on more formal occasions, such as business meals, and is still often observed for the first drink.

Another traditional cup is the masu, a box usually made of hinoki or sugi, which was originally used for measuring rice.
The masu holds exactly 180 ml (6.3 imp fl oz; 6.1 US fl oz), so the sake is served by filling the masu to the brim; this is done for chilled or room temperature sake.
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.

Saucer-like cups called sakazuki are also used, most commonly at weddings and other ceremonial occasions, such as the start of the year or at the beginning of a kaiseki meal.
In cheap bars, sake is often served room temperature in glass tumblers and called koppu-zake (コップ酒).
In more modern restaurants wine glasses are also used, and recently footed glasses made specifically for premium sake have also come into use.

Sake is traditionally served in units of 180 ml (6.3 imp fl oz; 6.1 US fl oz) (one gō), and this is still common, but other sizes are sometimes also available.

Traditionally sake is heated immediately before serving, but today restaurants may buy sake in boxes which can be heated in a specialized hot sake dispenser, thus allowing hot sake to be served immediately, though this is detrimental to the flavor.
There are also a variety of devices for heating sake and keeping it warm, beyond the traditional tokkuri.

Aside from being served straight, sake can be used as a mixer for cocktails, such as tamagozake, saketinis or nogasake.
Outside of Japan, the sake bomb, the origins of which are unclear, has become a popular drink in bars and Asia-themed karaoke clubs.

The Japanese Sake Association encourages people to drink chaser water for their health, and the water is called Yawaragi-mizu.
In Japan, sake is served chilled (reishu 冷酒), at room temperature (jōon 常温), or heated (atsukan 熱燗), depending on the preference of the drinker, the characteristics of the sake, and the season. Typically, hot sake is a winter drink, and high-grade sake is not usually drunk hot, because the flavors and aromas may be lost. Most lower-quality sake is served hot because that is the traditional way and it often tastes better that way, not so that flaws are covered up. There are gradations of temperature both for chilling and heating, about every 5 °C (9.0 °F), with hot sake generally served around 50 °C (122 °F), and chilled sake around 10 °C (50 °F), like white wine. Hot sake that has cooled (kanzamashi 燗冷まし) may be reheated.
Sake is traditionally drunk from small cups called choko or o-choko (お猪口) and poured into the choko from ceramic flasks called tokkuri. This is very common for hot sake, where the flask is heated in hot water and the small cups ensure that the sake does not get cold in the cup, but may also be used for chilled sake. Traditionally one does not pour one's own drink, which is known as tejaku (手酌), but instead members of a party pour for each other, which is known as shaku (酌). This has relaxed in recent years, but is generally observed on more formal occasions, such as business meals, and is still often observed for the first drink.
Another traditional cup is the masu, a box usually made of hinoki or sugi, which was originally used for measuring rice. The masu holds exactly 180 ml (6.3 imp fl oz; 6.1 US fl oz), so the sake is served by filling the masu to the brim; this is done for chilled or room temperature sake. 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.
Saucer-like cups called sakazuki are also used, most commonly at weddings and other ceremonial occasions, such as the start of the year or at the beginning of a kaiseki meal. In cheap bars, sake is often served room temperature in glass tumblers and called koppu-zake (コップ酒). In more modern restaurants wine glasses are also used, and recently footed glasses made specifically for premium sake have also come into use.
Sake is traditionally served in units of 180 ml (6.3 imp fl oz; 6.1 US fl oz) (one gō), and this is still common, but other sizes are sometimes also available.
Traditionally sake is heated immediately before serving, but today restaurants may buy sake in boxes which can be heated in a specialized hot sake dispenser, thus allowing hot sake to be served immediately, though this is detrimental to the flavor. There are also a variety of devices for heating sake and keeping it warm, beyond the traditional tokkuri.
Aside from being served straight, sake can be used as a mixer for cocktails, such as tamagozake, saketinis or nogasake. Outside of Japan, the sake bomb, the origins of which are unclear, has become a popular drink in bars and Asia-themed karaoke clubs.
The Japanese Sake Association encourages people to drink chaser water for their health, and the water is called Yawaragi-mizu.
Sake