Meaning of the word "cup of tea" in English

What does "cup of tea" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

cup of tea

US /kʌp əv tiː/
UK /kʌp əv tiː/

Idiom

something that one likes or excels at

Example:
Gardening is really my cup of tea.
Action movies are not really my cup of tea.