Origin of "Cup of Tea"
This expression has its roots in Britain at the beginning of the 20th century. Before that, at least as far back as the mid-18th century, the affirmative version was already in use.
Meaning of "Cup of Tea"
"Something that is in accord with one’s liking or taste."
Tea Drinking History
The story of tea begins in China. According to legend, in 2737 BC, the Chinese emperor Shen Nung was sitting beneath a tree while his servant boiled drinking water, when some leaves from the tree blew into the water. Shen Nung, a renowned herbalist, decided to try the infusion that his servant had accidentally created.