cup of tea
(not) something that one enjoys; something that one does not enjoy or do well (usually used in the negative)
It is not my cup of tea so I think that I will stay home and not go to the art gallery.

Going to art galleries is not my cup of tea so I think that I will stay home this evening.

[TahlilGaran] English Idioms Dictionary ▲

cup of tea
n. phr., informal
1. Something you enjoy or do well at; a special interest, or favorite occupation. Used with a possessive.
You could always get him to go for a walk: hiking was just his cup of tea.
Compare: DOWN ONE'S ALLEY.
2. Something to think about; thing; matter.
That's another cup of tea.
Compare: KETTLE OF FISH.

[TahlilGaran] English Idioms Dictionary ▲