That's not my cup of tea !

[crazYgeeK]

Is it an idiom ?
If it is, could you please give me some other idioms with the same meaning and talk about the reason that they are used as idioms ? Such as why "...cup of tea" not "...cup of coffee" ?
Thank you very much !

[Tdol]

Traditionally, we're a tea-drinking nation.

[Eden Darien]

Idioms are more about culture than linguistics since language is arbitrarily made by its community. And you can't take idioms literally.

[riquecohen]

Idioms are more about culture than linguistics since language is arbitrarily made by its community. And you can't take idioms literally.

Good observation. In that vein, the same idiom in Brazilian Portuguese is "It's not my beach."

[ackeiyword]

People in England are very particular about the tea they drink. There are so many varieties and they won't drink any other variety other than the one they are used to. It's a matter of taste. So, anything that one is not used to came to be called not one's cup of tea.

MODERATOR's NOTE: TAKEN FROM http://timesofindia.indiatimes.com/home/sunday-toi/open-space/What-is-the-origin-of-the-phrase-ones-cup-of-tea/articleshow/1775281.cms#ixzz157e0SHNK"