[tomo]

I am very curious what is "black coffee/tea" to you.

In my country, when you say "black coffee", it automatically means coffee with "no sugar, no milk". It never contains sugar, and "without milk" is obvious by its name.

When I went to England, I heard many people saying "black or white?" for my coffee and tea, and they ask "sugar?" after that even if I answerd "black" for the first question. So, I learnt BLACK may include sugar sometimes in English, and the black in my language was not universal.
But!
Some my American friends told me BLACK is definately without sugar. Always.

Is that the matter of UK/US difference or culture?