not my cup of tea
idiomatic phrase

- If something or someone is not your cup of tea, they are not the type of thing or person that you like.

(Cambridge Advanced Learner's Dictionary)

---
WORD ORIGIN
The exact origin of this phrase is unclear. Considering that drinking tea is a centuries-old British tradition, it's surprising the phrase did not surface until around the 20th century.

The phrase uses “cup of tea” in a figurative sense to mean a task, topic, person or object. It can also be used in a positive sense - that's my cup of tea - to note something that one likes or is suited to one's taste.

The word tea is found in several other phrases:

storm in a teacup/tempest in a teapot = when someone makes a problem seem larger or more serious than it really is (Sturm im Wasserglas)

not for all the tea in China = meaning something that you would not do even if you were paid a large sum of money (nicht um alles in der Welt)

the price of tea in China = used to denote something that is totally unrelated to the topic or discussion at hand and is typically used in the form of a question: What does that have to do with the price of tea in China?


---
SYNONYMS
that's not my thing, that doesn't do anything for me, I'm not into that, that's not my style

---
ANTONYMS
I'm really into that, that suits me, I'm keen on that, I can't get enough of that

---
IMPRESS YOUR FRIENDS TODAY
say something like:

“These internal seminars are not my cup of tea. I'm most happy when I'm visiting customers.”