What is the origin of the idiom "one's cup of tea" and when to use it?

The idiom "one's cup of tea" originated in Britain and is rooted in the cultural significance of tea in British society. Tea is a popular beverage in Britain, and individuals have different preferences for how they like their tea prepared, such as the strength, sweetness, or addition of milk. The idiom metaphorically extends this preference for tea to other aspects of life. The idiom suggests that just as individuals have different preferences for how they like their tea, people have varied likes and dislikes in other aspects of life.