This may clarify a bit. It appears to be a fairly recent saying (meaning, it's less than 150 years old :I am reposting here the question I asked a few days ago in another thread, namely:
Re Tea, there is way of saying I’ve learned which I like very much : “not my cup of tea”
Anyone knows where it comes from?
I am always very fascinated and interested in idioms/ways of saying and this is one of them. Where will it come from?
'My cup of tea' - the meaning and origin of this phrase