@freemo Wikipedia in Japan has a detailed article about the habit of warming and drinking (Kan). (There seems to be no English version, so use machine translation!)https://ja.wikipedia.org/wiki/%E7%87%97%E9%85%92
It is common for Japanese people to drink sake chilled, but as mentioned in the article, it is also preferred to drink it warm.
It is said that a certain liquor is delicious when you drink it cold, and delicious when you warm it, but I think it is best to drink it in the way you think it is delicious.
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